Hitachi AMS 2000 User Manual
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Hitachi AMS 2000 User Manual

Hitachi AMS 2000 User Manual

Family truecopy extended
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Hitachi AMS 2000 Family TrueCopy Extended
Distance User Guide
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  • Page 1 Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide INKS Document organization Release notes and readme Getting help Table of Contents MK-97DF8054-23...
  • Page 2 (hereinafter referred to as “Hitachi”). Hitachi, Ltd. and Hitachi Data Systems reserve the right to make changes to this document at any time without notice and assume no responsibility for its use. Hitachi, Ltd. and Hitachi Data Systems products and services can only be ordered under the terms and conditions of Hitachi Data Systems' applicable agreements.

  • Page 3: Table Of Contents

    Calculating data pool size ........2-4 Contents Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...
  • Page 4 Supported connections between various types of arrays ....3-18 Notes when Connecting Hitachi AMS2000 Series to other arrays ..3-18 Using the remote path —...
  • Page 5 Scripted TCE, SnapShot procedure ......8-4 Procedure for swapping I/O to S-VOL when maintaining local array ..8-9 Contents Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...
  • Page 6 Un-installing..........A-8 Setting the Differential Management Logical Unit ....A-10 Contents Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...
  • Page 7 Cascading with SnapShot ....... C-1 Contents Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...
  • Page 8 WDM and dark fibre......... .E-2 Glossary Index viii Contents Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 9: Preface

    This preface includes the following information: Intended audience Product version Release notes and readme Changes in this release Changes in this release Document organization Document conventions Convention for storage capacity values Related documents Getting help Preface Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 10: Intended Audience

    Hitachi Adaptable Modular System (AMS) 2000 family storage systems. Product version This document applies to Hitachi AMS 2000 Family firmware version 08D1/B or later. Release notes and readme Read the release notes and readme file before installing and using this product.

  • Page 11: Changes In This Release

    Provides supported configurations, operations, etc. for with SnapShot cascading TCE with SnapShot. Appendix D, Installing Provides required information when using Cache Partition TCE when Cache Manager. Partition Manager is in Preface Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...
  • Page 12 Wavelength extender. Division Multiplexing (WDM) and dark fibre Glossary Provides definitions for terms and acronyms found in this document. Index Provides links and locations to specific information in this document. Preface Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 13: Document Conventions

    [ a | b ] indicates that you can choose a, b, or nothing. { a | b } indicates that you must choose either a or b. underline Indicates the default value. Example: [ a | b ] xiii Preface Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 14: Convention For Storage Capacity Values

    1,024 PB or 1024 bytes Related documents The AMS 2000 Family user documentation is available on the Hitachi Data Systems Portal: https://portal.hds.com. Please check this site for the most current documentation, including important updates that may have been made after the release of the product.
  • Page 15 Installation and getting started The following documents provide instructions for installing an AMS 2000 Family storage system. They include rack information, safety information, site-preparation instructions, getting-started guides for experienced users, and host connectivity information. The symbol identifies documents that contain initial configuration information about Hitachi AMS 2000 Family storage systems.
  • Page 16 AMS 2000 Family TrueCopy Remote Replication User Guide, MK-97DF8052 Describes how to create and maintain multiple duplicate copies of user data across multiple AMS 2000 Family storage systems to enhance your disaster recovery strategy. AMS 2000 Family TrueCopy Extended Distance User Guide, MK-97DF8054 —...
  • Page 17 Hardware maintenance and operation The following documents describe how to operate, maintain, and administer an AMS 2000 Family storage system. They also provide a wide range of technical information and specifications for the AMS 2000 Family storage systems. The symbol identifies documents that contain initial configuration information about Hitachi AMS 2000 Family storage systems.
  • Page 18 Command and Control (CCI) The following documents describe how to install the Hitachi AMS 2000 Family Command Control Interface (CCI) and use it to perform TrueCopy and ShadowImage operations. AMS 2000 Family Command Control Interface (CCI) Installation Guide, MK-97DF8122 Describes how to install CCI software on open-system hosts.

  • Page 19: Getting Help

    Hitachi Dynamic Replicator - Scout Quick Install/Upgrade Guide, MK-98DF8222 Getting help If you need to contact the Hitachi Data Systems support center, please provide as much information about the problem as possible, including: • The circumstances surrounding the error or failure.
  • Page 20 Preface Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 21: Overview

    Overview This manual provides instructions for designing, planning, implementing, using, monitoring, and troubleshooting TrueCopy Extended Distance (TCE). This chapter consists of: How TCE works Typical environment TCE interfaces 1–1 Overview Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 22: How Tce Works

    A primary volume on the local array that is to be copied to the secondary volume on the remote side. • A differential management LU on local and remote arrays, which hold TCE information when the array is powered down 1–2 Overview Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 23: Volume Pairs

    During normal TCE operations, the P-VOL remains available for read/write from the host. When the pair is split, the S-VOL also is available for read/ write operations from a host. 1–3 Overview Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 24: Data Pools

    Figure 1-2 shows how S-VOL data is maintained at one update cycle back of P-VOL data. 1–4 Overview Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 25: Extended Update Cycles

    When inflow decreases, updates again complete within the cycle time. Cycle time should be determined according to a realistic assessment of write workload, as discussed in Chapter 2, Plan and design — sizing data pools bandwidth. 1–5 Overview Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 26: Consistency Groups

    Differential data between P-VOLs and S-VOLs is determined at that time. All differential data is sent to the S-VOLs, and the split or delete operations on the pairs completes. S-VOLs maintain 1–6 Overview Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 27: Differential Management Lus (Dmlu)

    GUI also provides these functionalities. CLI also has scripting capability. • CCI (Hitachi Command Control Interface (CCI), which is used to display volume information and perform all copying and pair-managing operations. CCI provides a full scripting capability which can be used to automate replication operations.
  • Page 28 1–8 Overview Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 29: Plan And Design - Sizing Data Pools And Bandwidth

    Plan and design workflow Assessing business needs — RPO and the update cycle Measuring write-workload Calculating data pool size Determining bandwidth 2–1 Plan and design — sizing data pools and bandwidth Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 30: Plan And Design Workflow

    The result is the RPO. 2–2 Plan and design — sizing data pools and bandwidth Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 31: Measuring Write-Workload

    Collect this data at 10 minute intervals and over as long a period as possible. Hitachi recommends a 4-6 week period in order to accumulate data over all workload conditions including times when the demands on the system are greatest.

  • Page 32: Calculating Data Pool Size

    Do this by arranging the values in six 10-minute intervals. If cycle time is 30 minutes, then calculate 30 minute rolling averages, arranging the values in three 10-minute intervals. 2–4 Plan and design — sizing data pools and bandwidth Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...
  • Page 33 10-minute increment, and populates the E cells, as shown in Figure 2-2. • • Figure 2-2: Rolling Averages Calculated Using 60 Minute Cycle Time 2–5 Plan and design — sizing data pools and bandwidth Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...
  • Page 34 60 minute time period. This is the base data pool size required for TCE. 3. Hitachi recommends a 20-percent safety factor for data pools. Calculate a safety factor with the following formula: (Combined base data pool size) x 1.2. For example: 529,200 MB x 1.2 = 635,040 MB...

  • Page 35: Data Pool Key Points

    • Plan for highest workload and multi-year growth. • For set up information, see Setting up data pools on page 6-12. 2–7 Plan and design — sizing data pools and bandwidth Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 36: Determining Bandwidth

    T2 x two lines 1.2 - 4.499 MB/s 45 Mb/s or more 4.500 - 9.999 MB/s 100 Mb/s or more Fast Ethernet 2–8 Plan and design — sizing data pools and bandwidth Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 37: Plan And Design - Remote Path

    This chapter provides network and bandwidth requirements, and supported remote path configurations. Remote path requirements Remote path configurations Using the remote path — best practices 3–1 Plan and design — remote path Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 38: Remote Path Requirements

    Remote data path requirements on page 3-3 • WAN optimization controller (WOC) requirements on page 3-4 • Fibre channel extender connection on page 3-9. 3–2 Plan and design — remote path Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 39: Management Lan Requirements

    • Table 3-2: Supported, Not Supported WAN Types WAN Types Supported • Dedicated Line (T1, T2, T3 etc) Not-supported • ADSL, CATV, FTTH, ISDN 3–3 Plan and design — remote path Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 40: Wan Optimization Controller (Woc) Requirements

    These functions reduce data transfer rates to a value input by the user. • Data compression must be supported. • TCP acceleration must be supported. 3–4 Plan and design — remote path Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 41: Remote Path Configurations

    Local controller 1 to remote controller 0 or 1 • Paths can connect a port A with a port B, and so on. Hitachi recommends making connections between the same controller/port, such as port 0B to 0B, and 1 B to 1 B, for simplicity. Ports can be used for both host I/O and replication data.

  • Page 42: Direct Connection

    • Figure 3-2: Direct FC Connection 3–6 Plan and design — remote path Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 43: Single Fc Switch, Network Connection

    Separate switches should be set up for host I/O to the local array and for data transfer between arrays. Using one switch for both functions results in deteriorated performance. 3–7 Plan and design — remote path Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 44: Double Fc Switch, Network Connection

    Separate switches should be set up for host I/O to the local array and for data transfer between arrays. Using one switch for both functions results in deteriorated performance. 3–8 Plan and design — remote path Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 45: Fibre Channel Extender Connection

    Figure 3-5: Fibre Channel Switches, WDM, Dark Fibre Connection Recommendations • Only qualified components are supported. For more information on WDM, see Appendix E, Wavelength Division Multiplexing (WDM) and dark fibre. 3–9 Plan and design — remote path Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 46: Port Transfer Rate For Fibre Channel

    If your remote path is a direct connection, make sure that the array power is off when modifying the transfer rate to prevent remote path blockage. Find details on communication settings in the Hitachi AMS 2100/2300 Storage System Hardware Guide. 3–10 Plan and design —...

  • Page 47: Iscsi

    In this case, category 5e or 6 copper LAN cable is recommended. 3–11 Plan and design — remote path Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 48: Single Lan Switch, Wan Connection

    This configuration is not recommended because a failure in a LAN switch or WAN would halt operations. • Separate LAN switches and paths should be used for host-to-array and array-to-array, for improved performance. 3–12 Plan and design — remote path Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 49: Multiple Lan Switch, Wan Connection

    • Separate LAN switches and paths should be used for the host-to-array and the array-to-array paths for better performance and to provide a backup. 3–13 Plan and design — remote path Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 50: Single Lan Switch, Woc, Wan Connection

    3-9, illustrates two remote paths using a single LAN switch, WOC, and WAN to make the connection to the remote site. • Figure 3-9: Single Switch, WOC, and WAN Connection 3–14 Plan and design — remote path Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 51: Multiple Lan Switch, Woc, Wan Connection

    Using separate LAN switch, WOC and WAN for each remote path ensures that data copy automatically continues on the second path in the event of a path failure. 3–15 Plan and design — remote path Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 52: Multiple Array, Lan Switch, Woc Connection With Single Wan

    WOC1 should be in one LAN (VLAN1); port 0B of local array 2 and WOC3 should be in another LAN (VLAN2). Connect the VLAN2 port directly to Port 0B of the local array 2 and WOC3. 3–16 Plan and design — remote path Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 53: Multiple Array, Lan Switch, Woc Connection With Two Wans

    LAN (VLAN1); port 0B of local array 2 and WOC3 should be in another LAN (VLAN2). Connect the VLAN2 port directly to Port 0B of the local array 2 and WOC3. 3–17 Plan and design — remote path Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 54: Supported Connections Between Various Types Of Arrays

    08B7/B or later when connecting with HUS100. • If a Hitachi Unified Storage as the local array connects to an AMS2010, AMS2100, AMS2300, or AMS2500 with under 08B7/B as the remote array, the remote path will be blocked along with the following message: •...
  • Page 55 AMS500 or AMS1000 cannot use the functions that are newly supported by AMS2100, AMS2300, or AMS2500. • AMS2100, AMS2300, or AMS2500 cannot use the functions that are newly supported by HUS100. 3–19 Plan and design — remote path Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 56: Using The Remote Path - Best Practices

    SNMP Agent Support Function and TRAP. In this case, follow instructions in the notice. Path blockage automatically recovers after restarting. If the path blockage is not recovered when the array is READY, contact Hitachi Customer Support. •...

  • Page 57: Plan And Design-Arrays, Volumes And Operating Systems

    TCE operations Planning arrays—moving data from earlier AMS models Planning logical units for TCE volumes Operating system recommendations and restrictions Maximum supported capacity 4–1 Plan and design—arrays, volumes and operating systems Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 58: Planning Workflow

    When AMS 500 or AMS 1000 is the local array, data pool 0 is used if the S-VOL LUN is even; data pool 1 is used if the S-VOL LUN is odd. 4–2 Plan and design—arrays, volumes and operating systems Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 59: Planning Logical Units For Tce Volumes

    SAS7.2K drives, SSD drives, or SAS (SED) drives and assign four or more disks (which have higher performance) than SATA drives, to a data pool. 4–3 Plan and design—arrays, volumes and operating systems Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 60: Operating System Recommendations And Restrictions

    4–4 Plan and design—arrays, volumes and operating systems Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...
  • Page 61 3. Click Edit Host Group. • 4–5 Plan and design—arrays, volumes and operating systems Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...
  • Page 62 Enable HP-UX Mode, Enable PSUE Read Reject Mode, and Enable PSUE Read Reject Mode to be selected in the Additional Setting box. 6. Click OK. A message appears, click Close. 4–6 Plan and design—arrays, volumes and operating systems Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 63: Windows Server 2000

    A P-VOL and S-VOL can be made into a dynamic disk on Windows Server 2003. • In Windows Server™ 2008, refer to the Hitachi Adaptable Modular Storage Command Control Interface (CCI) Reference Guide for the restrictions when the mount/unmount command is used.

  • Page 64: Identifying P-Vol And S-Vol Lus On Windows

    If the HLUN is not present on a host group target screen, on the Host Groups screen, select another Host group and repeat Step 3d. 4–8 Plan and design—arrays, volumes and operating systems Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 65: Windows 2000 Or Windows Server And Tce Configuration

    In Windows Server™ 2008, refer to the Hitachi Adaptable Modular Storage Command Control Interface (CCI) Reference Guide for the restrictions when mount/unmount command is used.

  • Page 66: Dynamic Disk In Windows 2000/Windows Server

    LU when creating a backup. It is not recommended to share one LU by multiple virtual machines in the configuration that creates a backup using TCE. 4–10 Plan and design—arrays, volumes and operating systems Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 67: Concurrent Use Of Dynamic Provisioning

    The points to keep in mind when using TCE and Dynamic Provisioning together are described here. Refer to the Hitachi Adaptable Modular Storage Dynamic Provisioning User's Guide for detailed information about Dynamic Provisioning. Hereinafter, the LU created in the RAID group is called a normal LU and the LU created in the DP pool that is created by Dynamic Provisioning is called a DP-VOL.
  • Page 68 When using the DP-VOL for the data pool of TCE, it is recommended to set the capacity making the over provisioning ratio 100% or less so that the DP pool capacity does not deplete. 4–12 Plan and design—arrays, volumes and operating systems Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...
  • Page 69 DP pool status and availability of the TCE pair operation. When the pair operation fails due to the DP pool status, correct the DP pool status and execute the pair operation again. 4–13 Plan and design—arrays, volumes and operating systems Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...
  • Page 70 S-VOL, or a data pool of TCE, any of the operations among the capacity growing, capacity shrinking, LU deletion, and Full Capacity 4–14 Plan and design—arrays, volumes and operating systems Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...
  • Page 71 0893/A or more or less than 0893/A (including AMS500/1000). • Figure 4-1: Availability of TCE Pair Creation between Different Firmware Versions 4–15 Plan and design—arrays, volumes and operating systems Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 72: User Data Area Of Cache Memory

    For Dynamic Provisioning, the user data area differs depending on DP Capacity Mode. Refer to the Hitachi Adaptable Modular Storage Dynamic Provisioning User's Guide for detailed information. Table 4-7: Supported Capacity of the Regular Capacity Mode (1 of 2) W Rev.
  • Page 73 5,420 MB 8,620 MB 8,320 MB 3,200 MB 6,440 MB 10,500 MB 10,200 MB 4,060 MB 8,480 MB 14,420 MB 14,120 MB 5,940 MB 4–17 Plan and design—arrays, volumes and operating systems Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...
  • Page 74 830 MB 1,440 MB 1,130 MB 610 MB 2,350 MB 3,280 MB 2,970 MB 930 MB 4,410 MB 7,160 MB 6,850 MB 2,750 MB 4–18 Plan and design—arrays, volumes and operating systems Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...
  • Page 75 4 GB/CTL 1.5 GB 6 GB/CTL 3 GB 8 GB/CTL 4 GB 10 GB/CTL 5 GB 12 GB/CTL 6 GB 16 GB/CTL 8 GB 4–19 Plan and design—arrays, volumes and operating systems Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...
  • Page 76 512 MB 4 GB/CTL 2 GB AMS2300 1 GB/CTL 310 MB 2 GB/CTL 512 MB 4 GB/CTL 2 GB 8 GB/CTL 4 GB 4–20 Plan and design—arrays, volumes and operating systems Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...
  • Page 77 5,640 MB 8,320 MB 7,800 MB 2,680 MB 6,660 MB 9,980 MB 9,460 MB 3,320 MB 8,700 MB 14,060 MB 13,540 MB 5,360 MB 4–21 Plan and design—arrays, volumes and operating systems Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 78: Formatting The Dmlu In The Event Of A Drive Failure

    For less than 08C3/F, even though the DMLU will not automatically become unformatted, make sure to format the DMLU. It is possible to format a DMLU without having to release the DMLU. 4–22 Plan and design—arrays, volumes and operating systems Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 79: Maximum Supported Capacity

    • NOTE: When SnapShot is enabled, a portion of cache memory is assigned to it for internal operations. Hitachi recommends that you review the appendix on SnapShot and Cache Partition Manager in the Hitachi AMS 2000 Family Copy-on-Write SnapShot User Guide.

  • Page 80: Tce And Snapshot Capacity

    SnapShot P-VOL (if present) in the array. For example: TCE P-VOL 1 = 100 GB TCE S-VOL 1 = 100 GB SnapShot P-VOL 1 = 50 GB 4–24 Plan and design—arrays, volumes and operating systems Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...
  • Page 81 These tables are provided for your information. Also, Figure 4-4 on page 4-32 shows a graph of how data volume-to-data pool volume relates to maximum supported capacity. 4–25 Plan and design—arrays, volumes and operating systems Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 82: Tce, Snapshot, Shadowimage Concurrent Capacity

    = TCE maximum single capacity - (Total ShadowImage S-VOL capacity / 51) - (Total SnapShot P-VOL capacity / 3) 1. TCE Maximum single capacity = 15 TB 4–26 Plan and design—arrays, volumes and operating systems Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...
  • Page 83 Change the P-VOL size • Reduce the number of P-VOLs • Change the data pool size • Reduce ShapShot and ShadowImage P-VOL/S-VOL size 4–27 Plan and design—arrays, volumes and operating systems Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 84: Maximum Supported Capacity Of P-Vol And Data Pool4-28

    6 GB/CTL Total P-VOL of SnapShot and P-VOL (S-VOL) of TCE capacity ÷ 5 + Total data pool capac- ity < 9.4 TB 4–28 Plan and design—arrays, volumes and operating systems Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 85: No Snapshot-Tce Cascade Configuration

    Table 4-17 Table 4-19 1 TB×4 LU ÷ 5 + less than 0.6 TB < 1.4 TB • Figure 4-2: No SnapShot-TCE cascade configuration 4–29 Plan and design—arrays, volumes and operating systems Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 86: Snapshot-Tce Cascade Configuration

    SnapShot in the formula. 1 TB×2 LU ÷ 5 + less than 1 TB < 1.4 TB • Figure 4-3: SnapShot-TCE cascade configuration 4–30 Plan and design—arrays, volumes and operating systems Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 87: Cache Limitations On Data And Data Pool Volumes

    All Data Pool Capacity to All Data Pool Capacity (TB) 1:0.1 40.0 : 4.0 1:0.3 24.0 : 7.2 1:0.5 17.1 : 8.5 4–31 Plan and design—arrays, volumes and operating systems Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 88: Cautions For Reconfiguring The Cache Memory

    TCE. In other patterns, the I/O performance deteriorates less than 10%. • Time-out for memory reconfiguration processing 4–32 Plan and design—arrays, volumes and operating systems Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...
  • Page 89 Cache Residency Manager setting operation Logical Unit formatting operation Logical Unit parity correction operation Cache Partition Manager operation Modular Volume Migration operation Array firmware updating operation 4–33 Plan and design—arrays, volumes and operating systems Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...
  • Page 90 Note: If the firmware version of the array is less than 0897/A, the memory reconfiguration without restart of the array is unsupported. 4–34 Plan and design—arrays, volumes and operating systems Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 91: Requirements And Specifications

    Requirements and specifications This chapter provides TCE system requirements and specifications. Cautions and restrictions are also provided. TCE system requirements TCE system specifications 5–1 Requirements and specifications Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 92: Tce System Requirements

    Max. 128. The command device is required only (CCI only) when CCI is used. The command device volume size must be greater than or equal to 33 MB. 5–2 Requirements and specifications Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 93: Displaying The Hardware Revision Number

    The interface type of multiple remote paths between local and remote arrays must be the same. Number of hosts when Maximum number of connectable hosts per port: 239. remote path is iSCSI 5–3 Requirements and specifications Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...
  • Page 94 P-VOL and S-VOL Copy pace User adjustable rate that data is copied to remote array. See the copy pace step on page 7-6 for more information. 5–4 Requirements and specifications Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...
  • Page 95 When firmware version is less than 0852/A, it is not allowed to create Expansion a TCE pair using unified LUs, which unify the LU with 1 GB or less capacity. 5–5 Requirements and specifications Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...
  • Page 96 MSS value again, a data transfer error occurs because TCE of HUS100 transmits the MTU1500 data. To change the MSS value, request the customer or the WAN router provider. 5–6 Requirements and specifications Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 97: Installation And Setup

    This chapter provides TCE installation and setup procedures using the Navigator 2 GUI. Instructions for CLI and CCI can be found in the appendixes. Installation procedures Setup procedures 6–1 Installation and setup Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 98: Installation Procedures

    Ask the NAS unit administrator to reboot the NAS unit. After rebooting, ask the NAS unit administrator to refer to “Recovering from FC path errors” in the Hitachi NAS Manager User's Guide and check the status of the Fibre Channel path (FC path in short) and to recover the FC path if it is in a failure status.

  • Page 99: Installing Tce

    01:Timeout), click Install License, and re-execute steps 6 to Code-01 occurs when the access from the host is frequent or the amount of the unwritten data in the cache memory is large. 6–3 Installation and setup Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...
  • Page 100 If the array restarts because of a spin-down instruction when Power Saving, the spin down may fail if the instruction is received immediately after the array restarts. When the spin-down fails, perform the spin- 6–4 Installation and setup Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...
  • Page 101 If it does not respond after 25 minutes or more, check the condition of the array. 10.A message appears stating that the restart is successful. Click Close. Installation of TCE is now complete. 6–5 Installation and setup Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 102: Enabling Or Disabling Tce

    3. Select TC-Extended in the Licenses list. 4. Click Change Status. The Change License screen displays. 5. To disable, clear the Enable: Yes check box. To enable, check the Enable: Yes check box. 6–6 Installation and setup Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...
  • Page 103 If it does not respond after 25 minutes or more, check the condition of the array. 9. A message appears stating that the restart is successful. Click Close. Enabling or disabling of TCE is now complete. 6–7 Installation and setup Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 104: Un-Installing Tce

    The De-Install License screen appears. 4. Enter a key code in the text box. Click OK. 5. A screen appears, requesting a confirmation to uninstall TCE option. Click Reconfigure Memory. 6–8 Installation and setup Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...
  • Page 105 The restart is not required if it is done when validating the function. However, if the installation of TCE was completed before SnapShot is installed, the dialog box, which asks whether or not to do the restart, is 6–9 Installation and setup Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...
  • Page 106 If it does not respond after 25 minutes or more, check the condition of the array. 7. A message appears stating that the restart is successful. Click Close. Un-installation of TCE is now complete. 6–10 Installation and setup Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 107: Setup Procedures

    1. In the Navigator 2 GUI, select the array where you want to set up the DMLU. 1. In the navigation tree, click Settings, then click DMLU. The DMLU screen displays. 2. Click Add DMLU. The Add DMLU screen displays. • 6–11 Installation and setup Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 108: Setting Up Data Pools

    • Up to 64 LUs can be assigned to a data pool. • Hitachi recommends a minimum of 20 GB for data pool size. • A logical unit consisting of SAS drives, SAS(SED) drives, SAS7.2K drives, SSD drives, and one consisting of SATA drives cannot be used for a data pool.
  • Page 109 2. Select Controller 0 or Controller 1 and X Core or Y Core, then click OK. • The Core item is not displayed: AMS 2100/2300 3. The LU ownership change message appears. Click Close. • 6–13 Installation and setup Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 110: Adding Or Changing The Remote Port Chap Secret

    1. Split the TCE pairs, after confirming first that the status of all pairs is Paired. To confirm pair status, see Monitoring pair status on page 9-2. To split pairs, see Splitting a pair on page 7-6. 6–14 Installation and setup Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 111: Setting Up The Remote Path

    GUI Settings/IP Settings/selected port screen. CHAP secret (if specified on the remote array—see Adding or changing the remote port CHAP secret on page 6-14 for more information). 6–15 Installation and setup Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...
  • Page 112 7. In the two remote path boxes, Remote Path 0 and Remote Path 1, select local ports. For iSCSI, enter the Remote Port IP Address and TCP Port No. for the remote array’s controller 0 and 1 ports. 8. Click OK. 6–16 Installation and setup Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 113: Pair Operations

    CCI instructions are included in this manual. Operations work flow Operations work flow Checking pair status Creating the initial copy Splitting a pair Resynchronizing a pair Swapping pairs 7–1 Pair operations Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 114: Operations Work Flow

    The remote path of TCE is recovered from the blockade automatically after the array is restarted. If the remote path blockage is not recovered when the array is READY, contact Hitachi Support. The time until the array status changes to READY after turning on the power is about five minutes or shorter even when the array has the maximum configuration.

  • Page 115: Tce Operations

    The P-VOL remains available to the host for read/write. • Pair status is Synchronizing while the initial copy operation is in progress. • Status changes to Paired when the initial copy is complete. 7–3 Pair operations Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 116: Prerequisites And Best Practices For Pair Creation

    • Bandwidth for the remote path must be known. • Local and remote arrays must be able to communicate with the Hitachi Storage Navigator 2 server, which manages the arrays. • Logical units must be set up and formatted on the remote array for the secondary volume or volumes.

  • Page 117: Create Pair Procedure

    To create a group and assign the new pair to it, click the New or existing Group Number button and enter a new number for the group in the box. 7–5 Pair operations Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 118: Splitting A Pair

    Split. Therefore, even if the array receives the command to split the pair, the pair status does not change to Split quickly. 7–6 Pair operations Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 119: Resynchronizing A Pair

    1. In the Navigator 2 GUI, select the desired array, then click the Show & Configure Array button. 2. From the Replication tree, select the Remote Replication icon. The Pairs screen displays. 3. Select the pair you want to resync. 7–7 Pair operations Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...
  • Page 120 4. Click the Resync Pair button. View further instructions by clicking the Help button, as needed. 7–8 Pair operations Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 121: Swapping Pairs

    Takeover. Confirm this before proceeding. Click the Refresh Information button to see the latest status. b. When the pairs have changed to Takeover status. execute the Swap command again, 7–9 Pair operations Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...
  • Page 122 7–10 Pair operations Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 123: Example Scenarios And Procedures

    CLI scripting procedure for S-VOL backup Procedure for swapping I/O to S-VOL when maintaining local array Procedure for moving data to a remote array Process for disaster recovery 8–1 Example scenarios and procedures Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 124: Cli Scripting Procedure For S-Vol Backup

    • Each host is connected by a LAN to the arrays. • CLI scripts are used for TCE and SnapShot operations. 8–2 Example scenarios and procedures Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...
  • Page 125 • • Figure 8-1: Configuration Example for a Remote Backup System 8–3 Example scenarios and procedures Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 126: Scripted Tce, Snapshot Procedure

    The SnapShot pairs are in Split status. • Host A uses a Windows operating system. The variables used in the script are shown in Table 8-2. The procedure and scripts follow. 8–4 Example scenarios and procedures Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...
  • Page 127 STONAVM_RSP_PASS=on set LOCAL=LocalArray set REMOTE=RemoteArray set TCE_PAIR_DB1=TCE_LU0001_LU0001 set TCE_PAIR_DB2=TCE_LU0002_LU0002 set SS_PAIR_DB1_MON=SS_LU0001_LU0101 set SS_PAIR_DB2_MON=SS_LU0002_LU0102 set DB1_DIR=D:\ set DB2_DIR=E:\ set LU1_GUID=xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx set LU2_GUID=yyyyyyyy-yyyy-yyyy-yyyy-yyyyyyyyyyyy set TIME=18000 (To be continued) 8–5 Example scenarios and procedures Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...
  • Page 128 (Continued from the previous section) REM Mount of P-VOL raidqry -x mount %DB1_DIR% Volume{%LU1_GUID%} raidqry -x mount %DB2_DIR% Volume{%LU2_GUID%} (To be continued) 8–6 Example scenarios and procedures Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...
  • Page 129 %SS_PAIR_DB2_MON% -gno 0 -st split -pvol -timeout %TIME% aureplicationmon -unit %REMOTE% -evwait -ss -pairname %SS_PAIR_DB2_MON% -gno 0 -nowait IF NOT %ERRORLEVEL% == 13 GOTO ERROR_SS_Split (To be continued) 8–7 Example scenarios and procedures Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...
  • Page 130 < Processing when SnapShot pair split fails and the SnapShot pair status does not become Split> GOTO END :ERROR_TCE_Resync < Processing when TCE pair resynchronization does not terminate within the specified time> GOTO END :END 8–8 Example scenarios and procedures Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 131: Procedure For Swapping I/O To S-Vol When Maintaining Local Array

    S-VOL in the local array becomes the P-VOL again. 11.,Business can restart at the local site. Mount the new P-VOL on the local array to local host server and restart I/O. 8–9 Example scenarios and procedures Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 132: Procedure For Moving Data To A Remote Array

    A data-analyzing application on host D analyzes the data in the S-VOL. Analysis processing is performed once every hour. • Figure 8-2: Configuration Example for Moving Data 8–10 Example scenarios and procedures Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 133: Example Procedure For Moving Data

    I/O for the S-VOL is deteriorated. P-VOL and S-VOL data are not the same after this operation is performed. 8–11 Example scenarios and procedures Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 134: Swapping P-Vol And S-Vol

    For details on the horctakeover command, see Hitachi AMS Command Control Interface (CCI) Reference Guide (MK-97DF8121). Swapping P-VOL and S-VOL SWAP Takeover ensures that system operation continues by reversing the characteristics of the P-VOL and the S-VOL and swapping the relationship between the P-VOL and S-VOL.

  • Page 135: Monitoring And Maintenance

    TCE system. Monitoring pair status Monitoring data pool capacity Monitoring the remote path Monitoring cycle time Changing copy pace Checking RPO — Monitoring P-VOL/S-VOL time difference Routine maintenance 9–1 Monitoring and maintenance Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 136: Monitoring Pair Status

    If synchronizing when the P-VOL and S-VOL are reversed, see Figure 9-1, and switch the P-VOL and the S-VOL. When the resynchronization copy is completed, the status changes to Paired. • Figure 9-1: Pair Status Transitions 9–2 Monitoring and maintenance Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...
  • Page 137 S- Write Only VOL before the status changes to Simplex. Paired:delete is a transitional status between Paired and Simplex. 9–3 Monitoring and maintenance Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...
  • Page 138 S-VOL, or the data pool for the S-VOL becomes full. To recover, resynchronize the pair, which leads to a full volume copy of the P-VOL to the S-VOL. 9–4 Monitoring and maintenance Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 139: Monitoring Data Pool Capacity

    Threshold level. Threshold is set by the user during data pool setup. It is a percentage of the data pool that, when reached, indicates to you that maximum capacity is close to being reached. The default Threshold level is 70%. 9–5 Monitoring and maintenance Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 140: Expanding Data Pool Capacity

    Data Pool. The Edit Data Pool screen appears. 4. In the Threshold box, enter the new value. 5. Click OK. 6. When the confirmation message appears, click Close. 9–6 Monitoring and maintenance Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 141: Monitoring The Remote Path

    If the inflow to the P-VOL increases and the differential data to be copied is larger than bandwidth and the update cycle allow, then the cycle expands until all the data is copied. 9–7 Monitoring and maintenance Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 142: Changing Cycle Time

    Fast — Copying is performed continuously and has priority. Host I/O performance is degraded. Copying time is guaranteed. 5. Click OK. 6. When the confirmation message appears, click Close. 9–8 Monitoring and maintenance Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 143: Checking Rpo - Monitoring P-Vol/S-Vol Time Difference

    Failure. • After an SVOL_Takeover command is issued, the pair cannot be deleted until S-VOL data is restored from the remote data pool. 9–9 Monitoring and maintenance Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 144: Deleting Data Pools

    Differential Management Logical Units list appears. 1. Select the LUN you want to remove. 2. Click the Remove DMLU button. A success message displays. 3. Click Close. 9–10 Monitoring and maintenance Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 145: Deleting The Remote Path

    Split all TCE pairs. If you perform the shutdown without splitting the pairs, the P-VOL status changes to Failure. In this case, re-synchronize the pair after restarting the remote array. • Delete the remote path (from local array). 9–11 Monitoring and maintenance Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...
  • Page 146 9–12 Monitoring and maintenance Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 147: Troubleshooting

    This chapter provides information and instructions for troubleshooting the TCE system. Troubleshooting overview Correcting data pool shortage Correcting array problems Correcting resynchronization errors Using the event log Recovering a TrueCopy path Miscellaneous troubleshooting 10–1 Troubleshooting Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 148: Troubleshooting Overview

    Also, if SnapShot is using the local or remote array, the data is deleted when capacity is full. To recover pairs in Pool Full status 1. Confirm the usage rates for local and remote array data pools. 10–2 Troubleshooting Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 149: Correcting Array Problems

    Take the following action to correct array problems. 1. Review the information log to see what the hardware failure is. 2. Restore the array. Drive failures must be corrected by Hitachi maintenance personnel. 3. When the system is restored, recover TCE pairs.

  • Page 150: Delays In Settling Of S-Vol Data

    The remote array is undergoing the pseudo deliberate shutdown. 0304 The specified S-VOL does not exist Delete the TCE pair and create on the remote array. the pair again. 10–4 Troubleshooting Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...
  • Page 151 LU is using is other than Normal recovered or Regression. 0324 The pool LU is undergoing the forced Retry after making the restoration by means of parity restoration by means of parity. 10–5 Troubleshooting Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...
  • Page 152 DP pool capacity depletion for the S-VOL. 032F The process of reconfigure memory Retry after the process of is in progress on the remote array. reconfigure memory is completed. 10–6 Troubleshooting Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 153: Using The Event Log

    “I6D000 Data pool does not have free space (Data pool-xx)”, where xx is the data pool number. Figure 10-3: Detail Code Example for Data Pool Error 10–7 Troubleshooting Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 154: Recovering A Truecopy Path

    Example of TrueCopy Path Failure Icon 4. Click the icon. A screen similar to the following appears, with the blocked path shown as a red block. Path Link Recover Button 10–8 Troubleshooting Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...
  • Page 155 NOTE: To confirm that the path is operational, in the left pane, under Reference, click Warning Information, Information Message, and then check the warning and information messages. When finished, close your browser to end your WEB session. 10–9 Troubleshooting Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 156: Miscellaneous Troubleshooting

    Inconsistent status exists in the CTG. When the command specifies the target as a pair, it cannot be executed if the target pair is in the Simplex or Synchronizing status. 10–10 Troubleshooting Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...
  • Page 157 LUs specified as a data pool, perform the setting so that the ownership of LUs specified as a data pool is balanced in advance. 10–11 Troubleshooting Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...
  • Page 158 10–12 Troubleshooting Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 159: Operations Using Cli

    Sample script • NOTE: For additional information on the commands and options in this appendix, see the Navigator 2 Command Line Interface (CLI) Reference Guide for Replication. A–1 Operations using CLI Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 160: Installation And Setup

    Ask the NAS unit administrator to reboot the NAS unit. After rebooting, ask the NAS unit administrator to refer to “Recovering from FC path errors” in the Hitachi NAS Manager User's Guide and check the status of the Fibre Channel path (FC path in short) and to recover the FC path if it is in a failure status.

  • Page 161: Installing

    6. When the Reconfigure Memory Status is Failed(Code-02: Failure of Reconfigure Memory), execute the following reconfigure memory operation. Code-02 occurs when the drive restoration processing starts in the background. For example: A–3 Operations using CLI Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...
  • Page 162 When the spin-down fails, perform the spin-down again. Check that the spin-down 4-6 Installing and enabling SnapShot Hitachi AMS 2000 Family Copy-on-Write SnapShot User Guide instruction has not been issued or has been completed (no RAID group in the Power...

  • Page 163: Enabling And Disabling

    TCE can be disabled or enabled. When TCE is first installed it is automatically enabled. Prerequisites for disabling • TCE pairs must be released (the status of all LUs must be Simplex). • The remote path must be released. A–5 Operations using CLI Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...
  • Page 164 1. From the command prompt, register the array in which the status of the feature is to be changed, and then connect to the array. 2. Execute the auopt command to change TCE status (enable or disable). A–6 Operations using CLI Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...
  • Page 165 For example: • % auopt -unit array-name -refer Option Name Type Term Status Reconfigure Memory Status TC-EXTENDED Permanent --- Disable Normal Enabling or disabling TCE is now complete. A–7 Operations using CLI Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 166: Un-Installing

    Normal(Command Monitoring) exists) before uninstalling TCE. 1. From the command prompt, register the array in which the TCE is to be uninstalled, and then connect to the array. A–8 Operations using CLI Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...
  • Page 167 3. Execute the auopt command to confirm that TCE is uninstalled. For example: • % auopt –unit array-name –refer DMEC002015: No information displayed. Uninstalling TCE is now complete. A–9 Operations using CLI Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 168: Setting The Differential Management Logical Unit

    An LU with SAS drives, SAS7.2K drives, SSD drives, SAS (SED) drives and an LU with a SATA drive cannot coexist in a data pool. Set all configured LUs using the same drive type. A–10 Operations using CLI Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...
  • Page 169 % aupool –unit array-name –rm -poolno 0 Are you sure you want to delete all logical units from the data pool 0? (y/n[n]): y The logical units have been successfully deleted. A–11 Operations using CLI Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 170: Setting The Lu Ownership

    4. Execute the autuningluown command to confirm an LU ownership. • % autuningluown -unit array-name -refer Core RAID Group DP Pool Cache Partition Type 1000 1001 2000 2001 A–12 Operations using CLI Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 171: Setting The Cycle Time

    3. Execute the auhgmap command to verify that the mapping information has been set. For example: • % auhgmap -unit array-name -refer Mapping mode = ON Port Group H-LUN 000:000 A–13 Operations using CLI Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 172: Setting The Remote Port Chap Secret

    Please input Path 1 Secret. Path 1 Secret: Re-enter Path 1 Secret: The remote path information has been set successfully. The setting of the remote port CHAP secret is completed. A–14 Operations using CLI Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 173: Setting The Remote Path

    Bandwidth [0.1 M] : 15 iSCSI CHAP Secret : N/A Remote Port TCP Port No. of Path Status Local Remote IP Address Remote Port Undefined Undefined Target Information Local Array ID A–15 Operations using CLI Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...
  • Page 174 : N/A Bandwidth [0.1 M] : 15 iSCSI CHAP Secret : N/A Remote Port TCP Port No. of Path Status Local Remote IP Address Remote Port Normal Normal A–16 Operations using CLI Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 175: Deleting The Remote Path

    1. From the command prompt, register the array in which you want to delete the remote path, and then connect to the array. 2. Execute the aurmtpath command to delete the remote path. For example: • A–17 Operations using CLI Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...
  • Page 176 % aurmtpath –unit array-name –rm –remote 85000027 Are you sure you want to delete the remote path information? (y/n[n]): y The remote path information has been deleted successfully. A–18 Operations using CLI Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...
  • Page 177 Remote Array ID Remote Path Name Bandwidth [0.1 M] : iSCSI CHAP Secret Remote Port TCP Port No. of Path Status Local Remote IP Address Remote Port Undefined Undefined A–19 Operations using CLI Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 178: Pair Operations

    Data Pool Usage Rate : 0% Consistency Time : 2008/02/29 11:09:34 Difference Size : 2.0 MB Copy Pace : --- Fence Level : N/A Previous Cycle Time : 504 sec. A–20 Operations using CLI Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 179: Creating A Pair

    % aureplicationremote -unit local array-name -split -tce -pvol 2 -svol 2 -remote xxxxxxxx Are you sure you want to split pair? (y/n [n]): y The pair has been split successfully. A–21 Operations using CLI Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 180: Resynchronizing A Pair

    % aureplicationremote -unit local array-name -simplex -tce –locallun pvol -pvol 2 –svol 2 –remote xxxxxxxx Are you sure you want to release pair? (y/n [n]): y The pair has been released successfully. A–22 Operations using CLI Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 181: Changing Pair Information

    2. Execute the aureplicationmon -evwait command. For example: • % aureplicationmon -unit local array-name –evwait –tce –st simplex –gno 0 -waitmode backup Simplex Status Monitoring... Status has been changed to Simplex. A–23 Operations using CLI Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 182: Confirming Consistency Group (Ctg) Status

    “Waiting” is displayed. While the predicted time to be output is being calculated, “Calculating” is displayed. A–24 Operations using CLI Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 183: Procedures For Failure Recovery

    Are you sure you want to reconstruct the remote path? (y/n [n]): y The reconstruction of remote path has been required. Please check “Status” as –refer option. A–25 Operations using CLI Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 184: Sample Script

    The GUID, which is displayed by the Windows mountvol command, is needed as an argument when using the mount command. For more information, refer to the Hitachi Adaptable Modular Storage Command Control Interface (CCI) Reference Guide.

  • Page 185: Operations Using Cci

    Operations using CCI This appendix describes CCI procedures for setup and performing TCE operations. Setup Pair operations Pair, group name differences in CCI and Navigator 2 B–1 Operations using CCI Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 186: Setup

    For details on the alternate command device function, refer to the Hitachi Adaptable Modular Storage Command Control Interface (CCI) User’s Guide.

  • Page 187: Setting Lu Mapping

    3. Execute the auhgmap command to verify that the LU Mapping is set. For example: • % auhgmap -unit array-name -refer Mapping mode = ON Port Group H-LUN B–3 Operations using CCI Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 188: Defining The Configuration Definition File

    For more information on configuration definition file, refer to the Hitachi Adaptable Modular Storage Command Control Interface (CCI) User’s Guide. The configuration definition file can be automatically created using the mkconf command tool.
  • Page 189 10.In the HORCM_INST section, set the necessary parameters, and then save (overwrite) the file. 11.Repeat Steps for the horcm1.conf file. Figure B-2 shows an example of the horcm1.conf file. • Figure B-2: Horcm1.conf Example B–5 Operations using CCI Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 190: Setting The Environment Variable

    C:\horm\etc>echo hd1-3 | .\inqraid Harddisk 1 -> [ST] CL1-A Ser =85000174 LDEV = 0 [HITACHI ] [DF600F- Harddisk 2 -> [ST] CL1-A Ser =85000174 LDEV = 1 [HITACHI ] [DF600F HORC = SMPL HOMRCF[MU#0 = NONE MU#1 = NONE MU#2 = NONE]...

  • Page 191: Pair Operations

    2.S-VOL PAIR ASYNC ,----- The pair status is displayed. For details on the pairdisplay command and its options, refer to the Hitachi Adaptable Modular Storage Command Control Interface (CCI) Reference Guide. CCI and Navigator 2 GUI pair statuses are described in Table B-1.

  • Page 192: Creating A Pair (Paircreate

    Splitting a pair (pairsplit) Two or more pairs can be split at the same time if they are in the same consistency group. To split a pair B–8 Operations using CCI Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 193: Resynchronizing A Pair (Pairresync

    To suspend pairs 1. Execute the pairdisplay command to verify that the pair to be suspended is in PAIR status. The group name in the example is VG01. B–9 Operations using CCI Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 194: Releasing Pairs (Pairsplit -S

    LU number, it can be used for discrimination of the SnapShot volumes of many generations. Requirements • Cascade configuration of TCE and SnapShot pairs is required. B–10 Operations using CCI Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...
  • Page 195 3. Confirm that the SnapShot Pair is split using the indirect or direct methods. a. For the indirect method, execute the pairsyncwait command to verify that the P-VOL data has been transferred to the S-VOL. For example: B–11 Operations using CCI Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...
  • Page 196 Status Q-Num 00101231ef Done The status may not display for one cycle after the command is issued. Q-Marker counts up one by executing the pairsplit -mscas command. B–12 Operations using CCI Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 197: Confirming Data Transfer When Status Is Pair

    P-VOL data at the time of the cycle update is reflected in S-VOL data. For more information, please refer to the Hitachi Adaptable Modular Storage Command Control Interface (CCI) Reference Guide. Pair creation/resynchronization for each CTG...
  • Page 198 Cycle time is determined according to the first pair to complete the initial copy. Figure B-4: Pair Creation/Resynchronization for each CTG-2 B–14 Operations using CCI Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 199: Response Time Of Pairsplit Command

    P-VOL. In order to check the completion, see Split- Marker of a remote snapshot is updated or a creation time of a snapshot is updated. B–15 Operations using CCI Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...
  • Page 200 All S-VOLs with PAIR status need to have corresponding cascading V-VOLs and MU# of these SnapShot pairs must match the MU# specified in a pairsplit -mscas command option. B–16 Operations using CCI Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...
  • Page 201 PSUS, the pair status is changed to SSWS even if the response is an error. See Hitachi Adaptable Modular Storage Command Control Interface (CCI) Reference Guide for more details about horctakeover. B–17 Operations using CCI Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 202: Pair, Group Name Differences In Cci And Navigator 2

    Pairs defined in a group on the configuration definition file are displayed in Navigator 2 as ungrouped. For information about how to manage a group defined on the configuration definition file as a CTG, see the Hitachi AMS Command Control Interface (CCI) Reference Guide. B–18...

  • Page 203: Cascading With Snapshot

    TCE P-VOLs and S-VOLs can be cascaded with SnapShot P-VOLs. This appendix discusses the supported configurations, operations, and statuses. Cascade configurations Replication operations supported Status combinations, Read/write supported Guidelines and restrictions TCE, SnapShot behaviors compared C–1 Cascading with SnapShot Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 204: Cascade Configurations

    With cascaded volumes, SnapShot’s pair status must also be taken into account before an operation can be performed. The tables in this section show TCE and SnapShot operations that may be performed. C–2 Cascading with SnapShot Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 205: Tce Operations Supported

    Table C-2: Supported TCE Operations when TCE S-VOL/SS P-VOL Cascaded SnapShot P-VOL Status TrueCopy Pair Synchronizing Threshold Failure Paired Split Failure Operation (Restore) over (Restore) Create Split Re-sync Restore Delete pairsplit -mscas C–3 Cascading with SnapShot Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 206: Snapshot Operations Supported

    SnapShot P-VOL = a TrueCopy S-VOL Failure status in these tables does not include LU blockage and other access problems. C–4 Cascading with SnapShot Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...
  • Page 207 SnapShot P-VOL Status S-VOL Synchronizing Threshold Failure Paired Split Failure Status (Restore) over (Restore) Paired Synchronizing Split R/W mode Split R mode Inconsistent Takeover Busy Pool Full C–5 Cascading with SnapShot Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 208: Guidelines And Restrictions

    4. The remote SnapShot pair, if it already exists, is split. 5. A snapshot of the S-VOL is created or updated on the remote array. The benefits of creating the remote snapshot are the following: C–6 Cascading with SnapShot Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 209: Tce, Snapshot Behaviors Compared

    S-VOL is Paired. invalid. Failures at remote: P-VOL changes to Failure. S-VOL changes to Inconsistent. No data consistency for S-VOL. Number of consistency groups supported C–7 Cascading with SnapShot Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...
  • Page 210 C–8 Cascading with SnapShot Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 211: Installing Tce When Cache Partition Manager Is In Use

    This appendix provides important information for Cache Partition Manager when TCE is installed. Initializing Cache Partition when TCE and SnapShot are installed D–1 Installing TCE when Cache Partition Manager is in use Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 212: Initializing Cache Partition When Tce And Snapshot Are Installed

    Manager already in use. • Figure D-1: Cache Partition Manager Usage • Figure D-2: TCE or SnapShot Installation with Cache Partition Manager D–2 Installing TCE when Cache Partition Manager is in use Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...
  • Page 213 On the remote array, Synchronize Cache Execution mode should be turned off to avoid TCE remote path failure. D–3 Installing TCE when Cache Partition Manager is in use Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...
  • Page 214 D–4 Installing TCE when Cache Partition Manager is in use Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 215: Wavelength Division Multiplexing (Wdm) And Dark Fibre

    Multiplexing (WDM) and dark fibre This appendix discusses WDM and dark fibre, which are used to extend Fibre Channel remote paths. WDM and dark fibre E–1 Wavelength Division Multiplexing (WDM) and dark fibre Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 216: Wdm And Dark Fibre

    Fabrics option to a switch, BB-Credits can hold up to 100 km. • For short distances (within several dozen kilometers), both signals of IN and OUT can be transmitted via one dark fiber. E–2 Wavelength Division Multiplexing (WDM) and dark fibre Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...
  • Page 217 If switching is executed during a dark fibre failure, data transfer must be moved to another path, as shown in Figure E-3. • Figure E-3: Dark Fiber Failure E–3 Wavelength Division Multiplexing (WDM) and dark fibre Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...
  • Page 218 It is recommend that a second line be set up for monitoring. This allows monitoring to continue if a failure occurs in the dark fiber. • Figure E-4: Line for Monitoring E–4 Wavelength Division Multiplexing (WDM) and dark fibre Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 219: Glossary

    A physical copy of all tracks from the source volume to the target volume. Bits per second. The standard measure of data transmission speeds. • A B C D E R S T X Y Z Glossary–1 Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...
  • Page 220 (CCI) Hitachi’s Command Control Interface software provides command line control of Hitachi array and software operations through the use of commands issued from a system host. Hitachi’s CCI also provides a scripting function for defining multiple operations.

  • Page 221: Concurrent Copy

    Data consistency at the remote site enables quicker restart of operations upon disaster recovery. • A B C D E R S T X Y Z Glossary–3 Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...
  • Page 222 The process of continuously monitoring the differences between the data on two volumes and determining when to synchronize them. • A B C D E R S T X Y Z Glossary–4 Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 223: Disaster Recovery

    A contiguous area of storage in a computer file system that is reserved for writing or storing a file. • A B C D E R S T X Y Z Glossary–5 Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 224: Fault Tolerance

    P-VOL. The amount of differential data that can be managed per write command is limited by the difference between the • A B C D E R S T X Y Z Glossary–6 Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 225: Initial Copy

    A logical description of a file is that it is a quantity of data • A B C D E R S T X Y Z Glossary–7 Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 226: Logical Unit

    To mount a device or a system means to make a storage device available to a host or platform. • A B C D E R S T X Y Z Glossary–8 Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...

  • Page 227: Pair Status

    A hardware-based solution for mirroring logical volumes from a primary site (the application site) onto the volumes of a secondary site (the recovery site). • A B C D E R S T X Y Z Glossary–9 Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...
  • Page 228 • A B C D E R S T X Y Z Glossary–10 Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...
  • Page 229 Recurring differential data updates are performed to keep the data in the S-VOL consistent with data in the P-VOL. • A B C D E R S T X Y Z Glossary–11 Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...
  • Page 230 Storage Navigator Modular 2 A multi-featured scalable storage management application that is used to configure and manage the storage functions of Hitachi arrays. Also referred to as “Navigator 2”. suspended status Occurs when the update operation is suspended while maintaining the pair status.
  • Page 231 The amount of data written to a volume over a specified period of time. • A B C D E R S T X Y Z Glossary–13 Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...
  • Page 232 • A B C D E R S T X Y Z Glossary–14 Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...
  • Page 233 CTG. See consistency group set command device cycle time, monitoring, changing in set environment variable split pairs A-13 cycle time, setting up with CLI suspend pairs Index-1 Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...
  • Page 234 B-18 differences from CCI assign pairs to a consistency pairs group assigning to a consistency group create a pair creating 9-10 delete a data pool 9-10 deleting delete a DMLU Index-2 Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...
  • Page 235 RPO, update cycle specifying cycle time updating the S-VOL A-26 scripts for backups (CLI) 3-10 setting port transfer-rate volume pair description SnapShot volume pairs, recommendations behaviors vs TCE’s cascading with Index-3 Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...
  • Page 236 3-12 configurations supported general requirements types supported Windows Server 2000 restrictions Windows Server 2003 restrictions wizard, TCE setup 3-14 WOCs, configurations supported write order write-workload Index-4 Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...
  • Page 237 Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide...
  • Page 238 Hitachi Data Systems Corporate Headquarters 2845 Lafayette Street Santa Clara, California 95050-2639 U.S.A. www.hds.com Regional Contact Information Americas +1 408 970 1000 [email protected] Europe, Middle East, and Africa +44 (0)1753 618000 [email protected] Asia Pacific +852 3189 7900 [email protected] MK-97DF8054-23...

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