HP StorageWorks P9000 - Disk Arrays User Manual
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HP StorageWorks P9000 - Disk Arrays User Manual

HP StorageWorks P9000 - Disk Arrays User Manual

Hp storageworks p9000 cache partition user guide (av400-96336, january 2011)
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HP StorageWorks
P9000 Cache Partition User Guide
Abstract
This guide describes how to use the HP StorageWorks P9000 Cache Partition Software on HP StorageWorks P9000 disk
arrays. The intended audience is a storage administrator or authorized service provider with independent knowledge of HP
StorageWorks P9000 disk arrays and P9000 software.
HP Part Number: AV400-96336
Published: January 201 1
Edition: Third
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Summary of Contents for HP StorageWorks P9000 - Disk Arrays

  • Page 1 HP StorageWorks P9000 Cache Partition User Guide Abstract This guide describes how to use the HP StorageWorks P9000 Cache Partition Software on HP StorageWorks P9000 disk arrays. The intended audience is a storage administrator or authorized service provider with independent knowledge of HP StorageWorks P9000 disk arrays and P9000 software.
  • Page 2 © Copyright 2010, 201 1 Hewlett-Packard Development Company, L.P. Confidential computer software. Valid license from HP required for possession, use or copying. Consistent with FAR 12.21 1 and 12.212, Commercial Computer Software, Computer Software Documentation, and Technical Data for Commercial Items are licensed to the U.S. Government under vendor's standard commercial license.

  • Page 3: Table Of Contents

    Contents 1 Creating virtual cache partitions..............4 About virtual cache partitions.....................4 Cache capacity for a CLPR....................4 Cache partitioning rules and guidelines..................6 Partitioning cache........................7 Cache partition work flows....................7 Creating a CLPR........................7 Migrating resources to and from a CLPR..................8 Deleting a CLPR CLPRsdeletingdeleting a CLPR.................9 2 Troubleshooting..................10 Troubleshooting Cache Partition....................10 3 Support and other resources..............11...

  • Page 4: Creating Virtual Cache Partitions

    1 Creating virtual cache partitions 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 5 Before partitioning cache memory into CLPRs, calculate how much cache capacity will be needed on your storage system, and then install any needed additional cache memory. It will be difficult to add more cache memory after partitioning cache into CLPRs. To determine whether you need additional cache capacity, see the following table and formulas.

  • Page 6: Cache Partitioning Rules And Guidelines

    After installing and partitioning cache memory in one or more CLPRs, you may want to use Cache Residency software to manage your cache. For more information, see the HP StorageWorks P9000 Performance for Open and Mainframe Systems User Guide. Cache partitioning rules and guidelines Observe the following rules, restrictions, and guidelines when creating cache logical partitions: Rules To create cache partitioning, enable Cache partition on your system.

  • Page 7: Partitioning Cache

    Partitioning cache Cache partition work flows Creating a CLPR Create a CLPR (see “Creating a CLPR” (page 7)). Migrate resources to the new CLPR (see “Migrating resources to and from a CLPR” (page 8)). Removing a CLPR Migrate resources from the CLPR that is to be removed (see “Migrating resources to and from a CLPR”...

  • Page 8: Migrating Resources To And From A Clpr

    In Cache Residency Size, select the cache capacity. You may select from 4 to 508 GB, in 2-GB increments. The default value is 4 GB. The size of the cache is allocated from CLPR0, but you must leave at least 8 GB remaining in CLPR0. In Num of Cache Residency Areas , type the desired capacity for the Cache Residency area.

  • Page 9: Deleting A Clpr Clprsdeletingdeleting A Clpr

    Click Set to close the dialog box. From the Cache Logical Partition Resource List, select one or more parity groups to be migrated, then select Cut. On the Partition Definition tree, right-click the CLPR to which you want to migrate resources, and then select Paste Resources.

  • Page 10: Troubleshooting

    2 Troubleshooting This chapter describes some troubleshooting methods to use if you have problems creating a CLPR with Cache Partition. Troubleshooting Cache Partition Displaying an error message If the settings are wrong after you click Apply, an error message appears. After closing the message, you can see the error detail.

  • Page 11: Support And Other Resources

    3 Support and other resources Contacting HP For worldwide technical support information, see the HP support website: http://www.hp.com/support Before contacting HP, collect the following information: Product model names and numbers Technical support registration number (if applicable) Product serial numbers Error messages Operating system type and revision level Detailed questions Subscription service...

  • Page 12: Conventions For Storage Capacity Values

    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 bytes 1 TB (terabyte) = 1,000 bytes 1 PB (petabyte) = 1,000 bytes...

  • Page 13: Hp Product Documentation Survey

    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. IMPORTANT: Provides clarifying information or specific instructions. NOTE: Provides additional information. TIP: Provides helpful hints and shortcuts.

  • Page 14: A Cache Partition Gui Reference

    A Cache Partition GUI reference This appendix describes the windows of the Cache Partition GUI. Partition Definition tab (Subsystem selected) Use this tab to view detail about all of the cache logical partitions in the storage system. Information appearing in this tab differs depending on what is selected in the Logical Partition tree. When Subsystem is selected, information about the selected storage system appears in the resource list.

  • Page 15: Partition Definition Tab, Cache Logical Partition Window (Clpr Selected)

    Partition Definition tab, Cache Logical Partition window (CLPR selected) Use this window to view information about all of the cache logical partitions in the storage system. This window opens when you select a CLPR in the Partition Definition tree of the Partition Definition tab.
  • Page 16 Item Description Indicates either All CUs or the selected CU number. Select CU Opens the Select CU dialog box. Partition Definition A hierarchical list of all of the cache logical partitions in the storage system. The cache logical tree partition number and name appear to the right of the CLPR icon ( Cache Logical When a CLPR is selected in the Partition Definition tree, the Cache Logical Partition resource list Partition resource list...

  • Page 17: Select Cu Dialog Box

    Item Description Detail For CLPR in When a CLPR is selected in the Partition Definition tree, the CLPR detail appears below the Subsystem resource list. Use this area to set or change the settings of the specified cache logical partition. You cannot directly change the capacity value of CLPR0.
  • Page 18 Item Description All CUs When selected, information about resources of all CUs appears on the CLPR resource list. Specific CU When selected, only information about resources that are associated with the specified CU appears on the CLPR resource list. Use the LDKC list to specify LDKC. Use the CU list to specify CU.

  • Page 19: Glossary

    Glossary HP StorageWorks P9000 or XP Business Copy. An HP StorageWorks application that provides volume-level, point-in-time copies in the disk array. CLPR cache logical partitions. Cnt Ac-J HP StorageWorks P9000 or XP Continuous Access Journal Software. Cnt Ac-J Z This is the version of Continuous Access Journal that supports mainframe volumes. See Cnt Ac-J for more information.

  • Page 20: Index

    Index Auto LUN related documentation, restrictions on manual migration across multiple CLPRs, restrictions Auto LUN manual migration across multiple CLPRs, Business Copy quick restore operations across multiple CLPRs, Business Copy operations not allowed with multiple CLPRs, restrictions on quick restore operations across multiple CLPRs, storage capacity values conventions,...

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