Page 1 This guide explains how to use HP StorageWorks XP P9000 Continuous Access Synchronous Software to protect information stored on HP StorageWorks P9000 disk arrays from local disaster by continuously copying local data across Fibre Channel connections to remote HP StorageWorks P9000 disk arrays. Topics include configuring and managing remote copies using Remote Web Console, recovering from a disaster, troubleshooting, and using Continuous Access for data migration and point-in-time replication.
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Page 3: Table Of Contents
Contents 1 Continuous Access Synchronous overview............7 How Continuous Access Synchronous works ................7 Typical components .........................8 Storage systems ........................8 Primary (MCU), secondary (RCU) systems................9 Volume pairs ...........................9 Data path ..........................10 Consistency groups ........................10 Interfaces ..........................10 Failover software ........................11 Overview of initial, update copy operations ................11 Initial copy ........................11 Update copy ........................12 2 Requirements and specifications..............13...
Page 4 LUN Expansion........................33 Virtual LVI/LUN........................33 Cache Residency........................33 LUN Manager........................34 Thin Provisioning........................34 Performance Monitor.......................34 Auto LUN..........................35 Restrictions........................35 Data Retention........................35 5 Configuration operations................37 Configuration workflow......................37 Define port attributes.......................37 Configure storage systems, define logical paths................38 Configure additional logical paths....................43 Set number of volumes to be copied concurrently, path watch time..........44 6 Pair operations..................46 Pair operations workflow......................46 Check pair status........................46...
Page 5 8 Data migration..................64 Migrate data.........................64 9 Planning and procedures for disaster recovery..........65 Disaster recovery overview.......................65 Transfer sense information between sites................65 File and database recovery....................65 Switch operations to the secondary site..................65 Analyze S-VOL currency......................66 Transfer operations back to the primary site................67 10 Troubleshooting..................69 General troubleshooting......................69 Error codes and messages.......................72...
Page 6 Glossary....................108 Index.......................110 Contents...
Page 7: Continuous Access Synchronous Overview
1 Continuous Access Synchronous overview Unless otherwise specified, the term P9000 in this guide refers to the following disk array: P9500 Disk Array The GUI illustrations in this guide were created using a Windows computer with the Internet Explorer browser. Actual windows may differ depending on the operating system and browser used. GUI contents also vary with licensed program products, storage system models, and firmware versions.
Page 8: Typical Components
Typical components A typical configuration consists of the following elements. Many, but not all, require user set up. A P9500 system on the local side connected to a host. The system on the remote side, which may be a P9500 system, must be connected to the local array via Fibre Channel data paths. The secondary system may consist of a different models—XP12000 Disk Array/XP10000 Disk Array or of other vendors’...
Page 9: Primary (Mcu), Secondary (Rcu) Systems
Primary (MCU), secondary (RCU) systems The primary system manages the P-VOL and the following operations: Host I/O operations to the P-VOL Initial copy and update copy operations between the P-VOL and S-VOL Pair status and configuration information The secondary system manages the S-VOL and the following operations: Remote copy operations issued by the primary system Assists in managing pair status and configuration (for example, rejects write I/Os to the S-VOL) The P9500 CU can function simultaneously as a primary system for one or more P-VOL, and as a...
Page 10: Data Path
During normal operations, the P-VOL remains available to the host for read and write I/O operations. The secondary system rejects write I/Os for the S-VOL, unless the write-enable option is specified for the S-VOL. Then, write I/O is allowed to the S-VOL while the pair is split. In this instance, S-VOL and P-VOL track maps keep track of differential data and are used to resynchronize the pair.
Page 11: Failover Software
Failover software Host failover software is used to transfer information between host servers at the local and remote sites. It is a critical component of any disaster recovery solution. When Continuous Access Synchronous is used as a disaster recovery tool, host failover is required to insure effective recovery operations.
Page 12: Update Copy
Update copy If the host issues an update after the initial copy is complete, the data is written to the P-VOL and copied to the S-VOL. Subsequent updates are held until the current update is completed in both volumes. This keeps the pair synchronized. Update copy has a higher priority than initial copy.
Page 13: Requirements And Specifications
2 Requirements and specifications This chapter provides basic system requirements. In addition to the information in this section, “Planning for Continuous Access Synchronous” (page 15) provides many specifications, recommendations, and restrictions for the elements of a Continuous Access Synchronous system that require attention before setting up and using Continuous Access Synchronous.
Page 14 ◦ The secondary system should be attached using a separate LAN at the remote site. RAID Manager ◦ Optional ◦ Command device required for each RAID Manager instance. See the HP StorageWorks P9000 RAID Manager User Guide for information on setting up and using RAID Manager. Requirements and specifications...
Page 15: Planning For Continuous Access Synchronous
Remote Web Console must be LAN-attached to the primary and secondary systems. See the HP StorageWorks P9000 Remote Web Console User Guide for information. The primary and secondary systems must be set up for Continuous Access Synchronous operations. See “Ensuring adequate cache”...
Page 16: Planning For System Performance
serial number. It is possible that a serial number overlap could occur. If you have two systems with the same serial number, contact HP Technical Support for assistance. When you connect the storage systems with the following combinations, the range you can specify for each model is restricted.
Page 17: Planning Volume Pairs
Planning volume pairs To plan Continuous Access Synchronous pair volumes, you need to do the following: At the local site, identify the volumes that contain important data to be backed up. At the remote site, set up the volumes that will hold the copied data. Volume pair requirements and recommendations The following requirements and information are provided to help you prepare Continuous Access Synchronous volumes:...
Page 18: Planning I/O To The S-Vol
When creating multiple pairs concurrently, make sure that you set up S-VOL LUNs in a way that allows the system to correctly match them to your selected P-VOLs. Even though you select multiple volumes as P-VOLs in the Remote Web Console Pair create procedure, only one of them displays in the dialog box—the one with the lowest LUN.
Page 19: Maximum Number Of Pairs Supported
When you start the initial copy, you will specify whether to manage differential data by Tracks or Cylinders. In Remote Web Console, you also have the Auto option. With Auto, either Cylinder or Track is used, depending on the basic size of the LU. When creating a pair with RAID Manager, the Auto option is not available.
Page 20: Priority Set For Initial Copy Operations And Scheduling Order
For OPEN-3, OPEN-8, OPEN-9, OPEN-E, OPEN-L, OPEN-K: The number of cylinders = ceil(ceil(Max. LBA/96)/15)+1 For OPEN-V: The number of cylinders = ceil(ceil(Max. LBA/512)/15)+1 To calculate the number of bitmap areas in each volume For OPEN-3, OPEN-8, OPEN-9, OPEN-E, OPEN-L, OPEN-K: The number of bitmap areas = ceil((number of cylinders x 15)/122,752) The ceil() indicates that the value between the parentheses should be rounded up to the nearest integer.
Page 21 Table 5 Priority set for P-VOLs for which initial copy operation is performed P-VOL Value set for Priority LUN 00 LUN 01 LUN 02 LUN 03 The order of starting initial copy and the Priority which is set for the P-VOLs are shown in the following table.
Page 22: Planning Data Paths
Table 8 Order of starting initial copy being performed (continued) Order of starting initial P-VOL Value set for Priority Remarks copy LUN 1 1 Continuous Access Synchronous pair for which initial copy is newly instructed to be performed LUN 10 Continuous Access Synchronous pair for which initial copy is newly instructed to be performed...
Page 23: Supported Data Path Configurations
Table 9 Link speed, maximum distance to 10 km (continued) Link speed Maximum distance for best performance 4 Gbps 3 km 8 Gbps 1.5 km Your HP account team can provide the latest information on the availability of serial-channel Continuous Access Synchronous connections. Supported data path configurations Three Fibre Channel configurations are supported for Continuous Access Synchronous.
Page 24: Planning Ports
Figure 5 Extender connection Set port topology to the following: NL/FL port: Fab on, FC-AL F port: Fab on, Point-to-Point Best practice is to create at least two independent data paths (one per cluster) between the primary and secondary systems for hardware redundancy for this critical element. When 4,000 pairs or more are used, we recommend that you restrict the number of pairs when creating pairs, so that 4,000 pairs or less use one physical path, to distribute load on the physical path.
Page 25: Port Requirements
Continuous Access Synchronous. This attribute cannot be changed by the Continuous Access Synchronous software. For details on the port to which an initiator/external mix mode is set, see the HP StorageWorks P9000 External Storage for Open and Mainframe Systems User Guide.
Page 26: Ensuring Consistent Status For Pair Suspensions, Path Failure
Ensuring consistent status for pair suspensions, path failure This section discusses the following specific conditions and subsequent behavior. This discussion applies to both Remote Web Console and RAID Manager users. When a pair in consistency group 127 suspends for any reason, you can ensure that all P-VOLs in the group become suspended.
Page 27: Other Split/Suspend Behavior With Consistency Groups
If the data paths are disconnected for a short time (less than one minute), S-VOLs may not change to PSUE status because the storage system does not detect the disconnection. After a power outage, all S-VOLs registered in CTG No. 127 will be changed to PSUE status. The maximum numbers of target volumes is up to 4,096.
Page 28 Continuous Access Synchronous does not provide host-failover functions. Use the failover software most suitable for your platform and requirements (for example, Microsoft Cluster Server). Planning for Continuous Access Synchronous...
Page 29: Sharing Continuous Access Synchronous Volumes
4 Sharing Continuous Access Synchronous volumes This chapter helps you plan Continuous Access Synchronous pair volumes when they are shared with non-Continuous Access Synchronous volumes. It discusses the program products that can be used with Continuous Access Synchronous. Volume types that can be shared with Continuous Access Synchronous The following table indicates whether non-Continuous Access Synchronous volumes can also be used as Continuous Access Synchronous P-VOLs and S-VOLs.
Page 30: Continuous Access Journal
Table 10 Volume types that can be shared with Continuous Access Synchronous (continued) Volume type Used as P-VOL? Used as S-VOL? S-VOL in PAIR status S-VOL in PSUS (Delete pair to RCU) status S-VOL in SSWS status S-VOL in PSUE (pair suspended-error) status Data Retention Volume with Read/Write attribute Volume with Read Only attribute...
Page 31: Business Copy
Sharing Continuous Access Synchronous and Business Copy volumes provides multiple copies of data at the local and/or remote sites. For information about Business Copy, see the HP StorageWorks P9000 Business Copy User Guide. NOTE: Business Copy is recommended for in-system copy operations. If Business Copy is not installed, Continuous Access Synchronous can be used to copy within the same P9500.
Page 32: Configurations With Business Copy S-Vols
Figure 7 Shared Cnt Ac-S S-VOL with BC P-VOL In the following figure, the configurations shown in the first two figures in this section are combined. Both the Continuous Access Synchronous P-VOL and S-VOL function as Business Copy P-VOLs, providing multiple copies at the local and remote sites. Figure 8 Shared Cnt Ac-S P-VOL, S-VOL with multiple BC P-VOLs Configurations with Business Copy S-VOLs In the following figure, a Business Copy S-VOL also functions as a Continuous Access Synchronous...
Page 33: Lun Expansion
When performing Virtual LVI/LUN operations on an existing Continuous Access Synchronous P-VOL or S-VOL, you must release the pair first to return the volume to SMPL status. For more information on Virtual LVI/LUN, see the HP StorageWorks P9000 Provisioning for Open Systems User Guide.
Page 34: Lun Manager
LUN Manager. Continuous Access Synchronous S-VOLs cannot be accessed by any UNIX/PC server host except when the pair is split. For more information on LUN Manager, see the HP StorageWorks P9000 Provisioning for Open Systems User Guide. Thin Provisioning A Thin Provisioning virtual volume (V-VOL) can be assigned to Continuous Access Synchronous pairs.
Page 35: Auto Lun
When Continuous Access Synchronous operations are completed, exit Continuous Access Synchronous and Remote Web Console. Re-enable Performance Monitor data collection. For further information on Performance Monitor, see the HP StorageWorks P9000 Performance for Open and Mainframe Systems User Guide. Auto LUN Continuous Access Synchronous volumes in certain pair statuses may be used as Auto LUN volumes, as described in the following table.
Page 36 Table 14 Status, availability of DRU operation Continuous Pair status Changing access attribute Referencing access attribute Access Synchronous volume P-VOL SMPL COPY PAIR PSUS PSUE S-VOL SMPL COPY PAIR PSUS PSUE * If the S-VOL Write option is enabled, the access attribute can be changed. The following table indicates whether a DRU volume with the specified access attribute can be used as a Continuous Access Synchronous P-VOL or S-VOL.
Page 37: Configuration Operations
5 Configuration operations This chapter provides instructions for setting up a Continuous Access Synchronous system that is ready for pair operations. Configuration workflow Check prerequisites for each procedure. In the production system, identify the production volume or volumes that will become Continuous Access Synchronous P-VOLs.
Page 38: Configure Storage Systems, Define Logical Paths
In the Switch Display box, select Port. The ports associated with the local storage system are listed. Right-click the port that you want to configure and select the desired port type (Initiator, RCU Target, or Target). When you have modified all the ports you want, review the Preview list. To change the attribute that you set for a port, right-click the port in the full upper list and select the new attribute.
Page 39 On the menu bar, click Actions > Remote Copy > Continuous Access Synchronous > RCU Operation. The RCU Operation window opens. Change to Modify mode by clicking the icon. In the Display box, select MCU&RCU. The tree displays CUs for the accessed system. Click the desired CU in the tree.
Page 40 When CU Free is selected In the RCU S/N box, enter the remote CU’s 5-digit serial number. Configuration operations...
Page 41 In the Controller ID box, select the remote system’s controller ID. In the Logical Adr. (RCU CU) box (appears when specific CU selected - not CU Free), enter the CU number of the RCU being added. The CU number differs by the specified controller ID, as follows: When the specified controller ID is 6 (P9500) or 5 (XP24000/XP20000 Disk Array), you can select a CU number from 00 to FE.
Page 42 15. In the Round Trip Time (ms) box, enter the time limit for data to travel from the P-VOL to the S-VOL. This value is used by the system to control initial copy pace when update copying is in progress. NOTE: The default setting of 1 on the P9500 produces a lower than expected initial copy throughput when the distances involved between the primary and secondary systems cause...
Page 43: Configure Additional Logical Paths
Table 17 Sample settings Round Trip Time Line Speed b/w Number of Lines Initial Copy Pace Number of Maximum Round Trip between MCU MCU/RCU b/w MCU/RCU Initial Copy VOLs Time RCU[ms] [MB/ms] Specified[ms] If using XP12000 Disk Array/XP10000 Disk Array: Set the following parameters using use the System Option window.
Page 44: Set Number Of Volumes To Be Copied Concurrently, Path Watch Time
In the M-R Path box, define the logical path between local and remote systems: In the Port column, select a local system initiator port. In the Pair-Port column, select the remote system RCU target port. This establishes a logical path with the selected initiator port. You can abbreviate the number to two characters.
Page 45 In the Maximum Initial Copy Activities box, enter the number of volumes that you want to be copied concurrently during an initial copy or resync operation. The number can range from 1 to 512 volumes. The default is 64 volumes. This setting may impact the performance of the primary system.
Page 46: Pair Operations
Stop Performance Monitor before performing the initial copy to avoid overloading with TCP/IP traffic. If you are creating External Storage Access Manager pairs, have the HP StorageWorks P9000 External Storage Access Manager User Guide on hand for specific information. P-VOL Fence Level settings...
Page 47 The P-VOL Fence Level setting, which you specify during the Paircreate operation, determines whether the host is denied access or continues to access the P-VOL when a Continuous Access Synchronous pair is suspended due to an error. You will select one of the following Fence Level settings: Data: the P-VOL is fenced if an update copy operation fails.
Page 48: Split Pairs
From the P-VOL Fence Level list, select the fence level for the new P-VOL(s). The fence level determines the conditions under which the primary system rejects write operations to the P-VOL. For an explanation of the options, see “Change fence level” (page 51).
Page 49: Resynchronize Pairs
The primary system records the updated tracks to the P-VOL that occur after the split as differential data. This data is copied to the S-VOL when the pair is resynchronized. You can set an option to block updates to the P-VOL while the pair is split. This results in the P-VOL and S-VOL staying synchronized.
Page 50: Release Pairs
When resynchronizing, Continuous Access Synchronous pairs can be migrated to External Storage Access Manager. To migrate Continuous Access Synchronous pairs to ESAM pairs, see the HP StorageWorks P9000 External Storage Access Manager User Guide. Procedure 7 To resynchronize a pair On the menu bar, click Actions >...
Page 51: Change Fence Level
Change to Modify mode by clicking the icon. In the tree, select the port, host group, CU, or the CU grouping where the pair is located. In the list, select the pair volume that you want to want to release, right-click, and select Pairsplit-S from the menu.
Page 52: Monitoring And Maintenance
7 Monitoring and maintenance This chapter provides information and instructions for monitoring and maintaining the Continuous Access Synchronous system. Monitor pair status Monitoring the Continuous Access Synchronous system is an ongoing operation that should be performed frequently to keep track of and maintain your pairs. When you want to perform a pair command, first check the pair’s status.
Page 53: Pair Status Definitions
Pair status definitions Status descriptions are provided in the table below. Click File/Refresh to make sure the data is current. Table 18 Pair status definitions Status Description Access to P-VOL Access to S-VOL SMPL This volume is not currently assigned to a Continuous Read/write Read/write Access Synchronous pair.
Page 54: Split And Suspend Types
Split and suspend types This section discusses pairs that are split by the user (PSUS), and pairs that are suspended by the system (PSUE). You can split a pair when the initial copy operation is complete. You must split a pair must be to perform media maintenance on the P-VOL or to access ◦...
Page 55: System Behavior
(20) CLPR number and name A device ID ending in # (for example, 00:00:3C #) indicates the LDEV is an external volume. For more information, see the HP StorageWorks P9000 External Storage for Open and Mainframe Systems User Guide. A device ID ending in X (for example, 00:00:3C X) indicates the LDEV is a Thin Provisioning virtual volume.
Page 56: Monitor Copy Operations, I/O
“Select data to be graphed ” (page 57) “Resize graph, save data” (page 58) Start and stop monitoring in Performance Monitor. See the HP StorageWorks P9000 Performance for Open and Mainframe Systems User Guide for instructions. In Remote Web Console, click Actions > Remote Copy > Continuous Access Synchronous > Usage Monitor.
Page 57: Select Data To Be Graphed
◦ A device ID ending in # (e.g., 00:00:3C #) indicates the LDEV is an external volume. For more information, see the HP StorageWorks P9000 External Storage for Open and Mainframe Systems User Guide. A device ID ending in X (e.g., 00:00:3C X) indicates the LDEV is a Thin Provisioning ◦...
Page 58: Resize Graph, Save Data
Table 21 Remote copy I/O statistics data (continued) Data type Description Average Transfer Rate Average transfer rate for initial remote I/Os (kB/sec) Average response Average response time (msec) for initial copy remote I/Os Update Copy Update copy RIO count Number of update copy remote I/Os Average transfer rate Average transfer rate (kB/sec) Average response...
Page 59: Delete Logical Paths
Table 22 Logical path status definitions (continued) Status Description Path Rejected The logical path link function has been rejected by the secondary system. All logical path resources in the secondary system might be used for other connections. Serial Number Mismatch The serial number of the control unit that is connected to this logical path does not match the serial number specified by the Add RCU dialog box.
Page 60: Rcu Maintenance
RCU maintenance Change minimum paths, round trip time, other RCU options You can change the options that affect how the system runs your copy operations. These are: Number of minimum paths for a pair Wait time until data transfer is complete (MIH RIO) Round trip time, which affects update and initial copy priorities Procedure 15 To change the RCU options On the menu bar, click Actions >...
Page 61: Delete Continuous Access Synchronous
Delete Continuous Access Synchronous You can delete the Continuous Access Synchronous relationship between the primary and secondary systems. Prerequisite information All Continuous Access Synchronous pairs must be deleted. All logical paths will be deleted when the relationship is deleted. Deleting the Continuous Access Synchronous relationship with a remote system does not affect the Continuous Access Synchronous operations between other primary system CUs and that secondary system.
Page 62: Planned Outage Of The Primary System
failure, suspend all affected pairs, and generate SIMs reporting the failures. The primary system changes the P-VOL status to suspended-by RCU but cannot change the status of the S-VOLs. If a primary or secondary system is powered off and the backup batteries are fully discharged while Continuous Access Synchronous pairs are suspended, differential data is retained to SSD.
Page 63: Media Maintenance
Media maintenance A pair must be suspended before performing media maintenance on the P-VOL. Write operations to the P-VOL that specify normal authorization are duplicated on the S-VOL. Write operations with diagnostic or device support authorization are completed at the P-VOL only. Miscellaneous maintenance...
Page 64: Data Migration
8 Data migration This chapter discusses using Continuous Access Synchronous to migrate data from one storage system to another. Migrate data Continuous Access Synchronous can be used to move data from one system to another. Data is typically migrated for the following reasons: To load data onto new or scratch volumes (for example, to a new or upgraded storage system) To temporarily move data from an LU to accommodate other activities (for example, to make repairs)
Page 65: Planning And Procedures For Disaster Recovery
9 Planning and procedures for disaster recovery This chapter discusses and provides instructions for using Continuous Access Synchronous for disaster recovery. Disaster recovery overview The major steps in preparing for disaster recovery are: Identify the volumes and groups that contain important files and data for disaster recovery. Create Continuous Access Synchronous pairs, paying special attention to the options in P-VOL Fence Level Settings to ensure that the system responds the way you want in the event of a failure (see the prerequisites in...
Page 66: Analyze S-Vol Currency
(for example, database log files). These S-VOLs should be recovered using files that you have confirmed to be current. Perform file recovery as needed. At the secondary site, connect to each remote system and release all Continuous Access Synchronous pairs. When an S-VOL changes to simplex, you cannot distinguish it from a non-Continuous Access Synchronous simplex volume.
Page 67: Transfer Operations Back To The Primary Site
Transfer operations back to the primary site When host operations are running at the secondary site, the primary site should be restored and operations transferred back. In the following procedure, you will establish Continuous Access Synchronous pairs at the secondary site, with data flow moving from the secondary site to the local.
Page 68 12. At the primary site, establish consistency groups and create the Continuous Access Synchronous pairs in the original direction. You may use the "none" initial copy option because all P-VOLs and S-VOLs are synchronized. If there is any possibility that the volumes are not 100% synchronized, use the Entire Volume initial copy option to be safe.
Page 69: 10 Troubleshooting
Retry the operation when the system has a lighter workload. A communication error may have occurred between the Remote Web Console computer and SVP. See the HP StorageWorks P9000 Remote Web Console User Guide for information and instructions. General troubleshooting...
Page 70 Monitoring Switch option is set to Enable. might not be updated. Disable Monitoring Switch, then enable again. For more information on Monitoring Switch, see the HP StorageWorks P9000 Performance for Open and Mainframe Systems User Guide. Table 25 Troubleshooting secondary path status problems Path status...
Page 71 Table 25 Troubleshooting secondary path status problems (continued) Path status Description Corrective action Invalid Port Mode The specified port is not Make sure the correct primary system port is configured as configured as an initiator port an initiator port and the correct secondary system port is or this path already exists.
Page 72: Error Codes And Messages
The error message may also include a P9500 error code. You may need to call HP Technical Support for assistance. Report the error code(s). See the HP StorageWorks P9000 Remote Web Console Messages for a list of the error codes.
Page 73: Troubleshooting Using Raid Manager
Troubleshooting using RAID Manager When an error occurs in pair operations using RAID Manager, you can identify the cause of the error by referring to the RAID Manager operation log file. This file is stored in the following directory by default: /HORCM/log*/curlog/horcmlog_HOST/horcm.log Where: * is the instance number.
Page 74 Table 27 RAID Manager error codes for Continuous Access Synchronous (SSB1 is B901/B90A/B90B/B912/D004) (continued) Error code Description (SSB2) B9BD The DKC LDEV configuration might have been changed while starting RAID Manager. Restart RAID Manager. B9C0 The source of the command device has run out. In LUN Manager, set the command device to OFF, then to C162 A request for a Pairresync operation was received.
Page 75 Table 27 RAID Manager error codes for Continuous Access Synchronous (SSB1 is B901/B90A/B90B/B912/D004) (continued) Error code Description (SSB2) C23C The command was rejected because the volume status is other than PAIR or COPY. C23D The command was rejected because the command for Continuous Access Synchronous synchronous was issued to the Continuous Access asynchronous volume.
Page 76 Table 27 RAID Manager error codes for Continuous Access Synchronous (SSB1 is B901/B90A/B90B/B912/D004) (continued) Error code Description (SSB2) C31D The P-VOL is being formatted. C31E The P-VOL is read only. C320 The number of primary-secondary system logical paths is 0 (for example, not specified). C321 The number of primary-secondary system logical paths is smaller than the minimum required.
Page 77 Table 27 RAID Manager error codes for Continuous Access Synchronous (SSB1 is B901/B90A/B90B/B912/D004) (continued) Error code Description (SSB2) C372 The process which is performed after the copying process of Auto LUN in the P-VOL is in progress. Retry the operation several minutes later. C373 A request for a Paircreate operation was received.
Page 78 Table 27 RAID Manager error codes for Continuous Access Synchronous (SSB1 is B901/B90A/B90B/B912/D004) (continued) Error code Description (SSB2) C3BE These volumes cannot be specified as a Continuous Access Synchronous S-VOL: Business Copy S-VOL not in PSUS status Business Copy Reserved volume Business Copy P-VOL in the process of reverse copy C3BF A Continuous Access Synchronous S-VOL cannot be specified as a Business Copy S-VOL, Business Copy...
Page 79 Table 27 RAID Manager error codes for Continuous Access Synchronous (SSB1 is B901/B90A/B90B/B912/D004) (continued) Error code Description (SSB2) CB71 The Paircreate operation cannot be executed because the P-VOL is an external storage system migration volume. CB73 The Paircreate operation cannot be executed because the S-VOL is an external storage system migration volume.
Page 80: Service Information Messages (Sims)
For further information on SNMP operations, see the HP StorageWorks P9000 Remote Web Console User Guide, or contact your HP account team. For further information on the SIMs, see the HP StorageWorks P9000 Remote Web Console User Guide, or call the HP Technical Support for assistance.
Page 81: 1 Support And Other Resources
HP StorageWorks P9000 Cache Partition User Guide HP StorageWorks P9000 Continuous Access Journal for Mainframe Systems User Guide HP StorageWorks P9000 External Storage for Open and Mainframe Systems User Guide HP StorageWorks P9000 Performance for Open and Mainframe Systems User Guide...
Page 82: Hp Websites
Conventions for storage capacity values P9000 disk arrays use the following values to calculate physical storage capacity values (hard disk drives): 1 KB (kilobyte) = 1,000 bytes 1 MB (megabyte) = 1,000 bytes 1 GB (gigabyte) = 1,000...
Page 83 Table 29 Document conventions (continued) Convention Element Monospace text File and directory names System output Code Commands, their arguments, and argument values Monospace, italic text Code variables Command variables Monospace, bold text Emphasized monospace text WARNING! Indicates that failure to follow directions could result in bodily harm or death. CAUTION: Indicates that failure to follow directions could result in damage to equipment or data.
Page 84: A Continuous Access Synchronous Gui Reference
A Continuous Access Synchronous GUI reference This appendix describes the Continuous Access Synchronous windows, dialog boxes, fields, and behaviors in Remote Web Console. Continuous Access Synchronous windows Continuous Access Synchronous information and pair operations are seen and initiated in the following GUI windows: Pair Operation RCU Operation...
Page 85: Pair Operation Window
Window Context menu command Description RCU Operation RCU Status Displays secondary systemstatus and path status. window RCU Operation > Add RCU Used to add a secondary system to the primary system in a Continuous Access Synchronous relationship. RCU Operation > Change Used to change secondary system options.
Page 86 Use this window to: “Create pairs” (page 46) “Split pairs” (page 48) “Resynchronize pairs” (page 49) “Release pairs” (page 50) “Check pair status” (page 46) “Change fence level” (page 51) Item Description Tree Displays the connected storage system, the LDKC, the CU grouping, the CUs, ports, and host groups.
Page 87 VOL Access Access status of the quorum disk. CLPR The CLPR number and name for the pair volumes. See the HP StorageWorks P9000 Cache Partition User Guide for more information on CLPR. Used Volume Displays the used capacity and the licensed capacity (in parenthesis) for all pairs.
Page 88: Detailed Information Dialog Box
Detailed Information dialog box This dialog box lets you view details for a selected Continuous Access Synchronous pair. Item Description P-VOL and S-VOL areas The following displays in the order shown: Port - GID – LUN LDKC number: CU number: LDEV number). Emulation type Capacity in MB (to two decimal places).
Page 89 Item Description Update Type Program product pair type (Continuous Access Synchronous). Copy Pace Number of tracks copied per interval during the initial copy. Copy pace can be between 1- 1 5 tracks. This field displays only when the P-VOL is selected. It is disabled when the status becomes PAIR.
Page 90: Paircreate Dialog Box
Paircreate dialog box This dialog box lets you create a pair. See “Create pairs” (page 46) for complete information. Item Description P-VOL Shows the P-VOL port, GID, LUN (LDKC number, CU number, LDEV number), and CLPR number and name. S-VOL Where the S-VOL is defined: port, GID, LUN.
Page 91: Pairsplit-R Dialog Box
Pairsplit-r dialog box This dialog box lets you split a pair. See “Split pairs” (page 48) for complete information. Item Description Volume Shows the selected volume’s port, GID, LUN (LDKC number, CU number, LDEV number). S-VOL Write Where the option is defined that allows write I/O to the S-VOL when the pair is split. Options are Enable and Disable.
Page 92: Pairsplit-S Dialog Box
This dialog box lets you resynchronize a pair. See “Resynchronize pairs” (page 49) for complete information. Item Description P-VOL Shows the selected volume’s port, GID, LUN (LDKC number, CU number, LDEV number). P-VOL Fence Level Where the option is defined for rejecting write operations to the P-VOL. Copy Pace Where maximum number of tracks to be copied is defined: 1- 1 5.
Page 93: Display Filter Dialog Box
This dialog box lets you change the P-VOL Fence Level for an existing pair. See “Change fence level” (page 51) for complete information. Item Description Volume Shows the selected volume’s port, GID, LUN (LDKC number, CU number, LDEV number). P-VOL Fence Level Where the option is defined for rejecting write operations to the P-VOL.
Page 94: Rcu Operation Window
Item Description P-VOL/S-VOL Select the volume type, P-VOL or S-VOL or all types. CT Group Select the consistency group. MCU-RCU Path Select path type (disabled at this time). CLPR Select the CLPR (cache logical partition). Internal/External VOL Select the volume type, internal or external, or all types. Quorum Disk ID Select the quorum disk ID.
Page 95 “Monitor, maintain logical paths” (page 58) View the following: ◦ Information related to Continuous Access Synchronous storage systems: “RCU Operations list when “MCU&RCU” is selected ” (page 96) ◦ Information related to ports in: “RCU Operations list when “Port” is selected ” (page 97) Item Description Tree...
Page 96: Rcu Operations List When "Mcu&Rcu" Is Selected
RCU Operations list when “MCU&RCU” is selected List field descriptions when MCU&RCU is selected in the Display box are shown below. The fields vary according to the selections you make in the tree: “When LDKC, a CU group, or CU is selected in tree” (page 96) “When an MCU or RCU is selected in tree”...
Page 97: When An Mcu Or Rcu Is Selected In Tree
Item Description Status Normal indicates no path failure to the RCU. Failed indicates a failure in all paths to the RCUs. Warning indicates that a failed path to the RCU exists. The field is empty when the local CU is an MCU. Num.
Page 98: Rcu Status Dialog Box
RCU Status dialog box When a specific CU is selected When CU Free is selected Continuous Access Synchronous GUI reference...
Page 99 This dialog box lets you view status and other information for the selected RCU. Right-click an RCU (MCU&RCU in Display), then select RCU Status. Item Description List Paths on this system. No. The paths are listed in numbered order. Path Status. The path’s condition. See “Logical path status definitions”...
Page 100: Add Rcu Dialog Box
Item Description Round Trip Time The time limit for data to travel from P-VOL to S-VOL. Check box, "Refresh the To refresh the RCU Operation window after closing the RCU Status dialog box, click the RCU Operation window check box. By default, the check box is not selected. after this dialog box is closed"...
Page 101: Rcu Option Dialog Box
This dialog box lets you link two storage systems for creating Continuous Access Synchronous pairs. See “Configure storage systems, define logical paths” (page 38) for complete information. Item Description RCU S/N Remote system’s CU serial number. LDKC Remote system’s LDKC number. Controller ID Remote system’s controller ID.
Page 102: Add Path Dialog Box
This dialog box lets you change data path parameters: the minimum number of paths, RIO MIH, and Round Trip Time options. “Configure storage systems, define logical paths” (page 38) for complete information. Item Description Minimum Paths Where minimum number of paths is defined. RIO MIH Time (sec.) Where the time is defined in which the copy operation must complete, otherwise the operation fails.
Page 103: Usage Monitor Window
This dialog box lets you add an SSID. See “Add, delete SSIDs for an RCU” (page 60) for complete information. Item Description SSID (1st) Existing SSID. SSID (2nd), (3rd), (4th) Where additional SSIDs are defined. Usage Monitor window This window lets you monitor and use copy-operations data and I/O statistics. See “Monitor copy operations, I/O ”...
Page 104: History Window
History window This window lets you view the history of operations performed on pairs, and the data associated with each operation. Information about field behavior is shown in “History window notes” (page 105). Field Description Status The current status of operation history: No history file exists: Operation history does not exist.
Page 105: History Window Notes
Field Description Previous/Next Shows a maximum of 16,384 operations at a time. If the number of operations exceeds 16,384, click Previous or Next to show the remaining operations. History list The history of operations on pairs in the connected storage system. The list consists of the following information: Operation Time: Date and time operation completed.
Page 106: System Option Window
The following example shows an exported text file. Explanations follow the example. 2002/07/25 20:26:43,Pairing Start,00:1a:80,-----,00:1a:85 2002/07/25 20:25:30,Pair Delete,00:00:84,-----,00:00:86 2002/07/25 17:01:33,Suspend Operation,00:00:85,-----,00:00:87 2002/07/19 20:01:58,Pair Resync. Complete,00:1a:80,-----,00:1a:9e,000:00:02 2002/07/19 20:01:56,Pair Resync. Start,00:1a:8a,-----,00:1a:a8 2002/07/18 09:36:22,Pairing Complete,00:1a:80,-----,00:1a:85,000:00:10 (1) Data and time when the operation finished. (2) Status (3) LDKC, CU, and LDEV numbers of the accessed volume (LDKC:CU:LDEV) (4) Not used...
Page 107 Field Description Operation Indicates the operation that will occur when you click Apply. Change System Option: Change storage system options. Change SIM Report: Change whether to report SIMs to hosts. Blank: Nothing will occur when you click Apply. Preview The number to the left of the slash (/) indicates the number of items (for example, rows) appearing in the Preview list.
Page 108 Glossary array group A group of four or eight physical hard disk drives (HDDs) installed in a P9000 or XP disk array and assigned a common RAID level. RAID1 array groups consist of four (2D+2D) or eight HDDs (4D+4D). RAID5 array groups include a parity disk, but also consist of four (3D+1P) or eight HDDs (7D+1P).
Page 109 I/O slots and the number of ports available per I/O adapter. The P9000 and XP family of disk arrays supports Fibre Channel (FC) ports as well as other port types. Ports are named by port group and port letter, such as CL1-A.
Page 110 Index fence level changing, Add Path dialog box, Fibre Channel requirements, Add RCU dialog box, file and database recovery, Add SSID dialog box, graphing I/O data, bandwidth, bitmap areas, help obtaining, cache, planning considerations, History window, Change Pair Option dialog box, hosts supported, consistency groups description,...
Page 111 exporting pair details, transfer operations to local site, general information, typographic conventions, planning, releasing, requirements, recommendations, update copy, resynchronizing (resuming), Usage Monitor window, splitting, Usage Monitor, using, Pairsplit-r dialog box, Pairsplit-S dialog box, paths, changing minimum number of, Virtual LVI/LUN, sharing volumes with, performance, planning for, volumes, sharing with others, ports...

HP StorageWorks P9000 User Manual

1 Continuous Access Synchronous Overview

2 Requirements and Specifications

3 Planning for Continuous Access Synchronous

4 Sharing Continuous Access Synchronous Volumes

5 Configuration Operations

6 Pair Operations

7 Monitoring and Maintenance

8 Data Migration

9 Planning and Procedures for Disaster Recovery

10 Troubleshooting

1 Support and Other Resources

A Continuous Access Synchronous GUI Reference

Quick Links

Troubleshooting

Related Manuals for HP StorageWorks P9000

Summary of Contents for HP StorageWorks P9000

Table of Contents