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HP StorageWorks
XP24000/XP20000 Disk/Cache Partition
User's Guide
Part number: T5214-96076
Seventh edition: August 2009
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Contents 1 Overview of HP StorageWorks XP Disk/Cache Partition Software ............. 7 Introduction to Disk/Cache Partition .............................................................................................. 7 Benefits of Disk/Cache Partition .................................................................................................... 8 Improves Security ................................................................................................................. 8 Assures
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Conventions for Storage Capacity Values ..................................................................................... 37 HP Technical Support ................................................................................................................ 38 Subscription Service .................................................................................................................. 38 HP Websites ...................................................................................
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Figures 1 Storage Logical Partition (SLPR) ................................................................................. 10 2 Cache Logical Partition (CLPR) .................................................................................. 11 3 Storage Administrator and Storage Partition Administrator Privileges .............................. 15 4 Manual Migration between SLPRs ............................................................................. 16 5 Logical Partition Window (Storag
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Tables 1 CLPR Data Capacity and the Recommended Cache Capacity ....................................... 11 2 Logical Partition Window Details (Storage System Selected) .......................................... 18 3 Storage Management Logical Partition Window (SLPR Selected) .................................... 19 4 Cache Logical Partition Window Details (CLPR Selected) .............................................. 21 5 Select CU Dialog Box Details ...............................................
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1 Overview of HP StorageWorks XP Disk/Cache Partition Software This chapter provides an introduction to XP Disk/Cache Partition Software. • Introduction to Disk/Cache Partition, page 7 • Benefits of Disk/Cache Partition, page 8 • Feature Highlights, page 8 Unless otherwise specified, the term storage system in this guide refers to the following disk arrays: • HP StorageWorks XP24000 Disk Array • HP StorageWorks XP20000 Disk Array The GUI illustrations in this guide were created using a Windows c
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Partition to create up to 32 private virtual storage machines on the storage system. With the ability to manage each partition as its own storage system, IT managers can operate storage in an utility like fashion, negotiating and providing different QoS by application and charging back business units for storage usage. Benefits of Disk/Cache Partition Improves Security XP Disk/Cache Partition restricts access to data and resources from users and storage administrators without authorization to th
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2 About Disk/Cache Partition This chapter provides a detailed description of Storage Logical Partition (SLPR) and Cache Logical Partition (CLPR). • Storage Logical Partition (SLPR), page 9 • Cache Logical Partition (CLPR), page 10 The storage systems can connect multiple hosts, and can be shared by multiple users, such as different departments or even different companies. This can cause conflicts among the various users. For example, if a particular host issues a lot of I/O requests, the I/O per
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Figure 1 Storage Logical Partition (SLPR) . Cache Logical Partition (CLPR) If one storage system is shared with multiple hosts, and one host reads or writes a large amount of data, read and write data can require enough of the cache memory to affect other users. The cache logical partition function creates two or more virtual cache memories, with each allocated to a different host. This prevents contention for cache memory. Parity groups containing LDEVs that belong to the optional LDKC can be a
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You can create up to 32 cache logical partitions in one storage system, including the default CLPR 0. See “Creating a Cache Logical Partition” on page 32 for instructions on creating cache logical partitions. Figure 2 illustrates a cache logical partition. Figure 2 Cache Logical Partition (CLPR) . Table 1 lists the recommended cache capacity, which is determined by the CLPR data capacity. Table 1 CLPR Data Capacity and the Recommended Cache Capacity CLPR Data Capacity Recommended Cache Capacity
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CLPR Data Capacity Recommended Cache Capacity 182,000 GB or more 40 GB or more 218,000 GB or more 48 GB or more 254,000 GB or more 56 GB or more 290,000 GB or more 64 GB or more 326,000 GB or more 72 GB or more To calculate the data capacity: The number of 3D+1P parity groups x capacity of one HDD x 3 + the number of 6D+2P parity groups x capacity of one HDD x 6 + the number of 7D+1P parity groups x capacity of one HDD x 7 + the number of 2D+2D parity groups x capacity of one HDD x 2 To calculat
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3 Preparing for XP Disk/Cache Partition Operations This chapter discusses the preparation needed for XP Disk/Cache Partition operations. • Storage Administrator and Storage Partition Administrator Privileges, page 13 • Possible Interacting and Conflicting Functions, page 15 Storage Administrator and Storage Partition Administrator Privileges Once the XP Disk/Cache Partition license key has been installed for the HP StorageWorks XP Remote Web Console Java API, a storage administrator with write p
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• Accessing Storage Logical Partition 0 (SLPR 0) and Cache Logical Partition 0 (CLPR 0) • Managing mainframe volumes • Storage Partition Administrators can view and manage only those resources that have been as- signed to a specific storage logical partition. Storage partition administrators have access only to the functions listed below. If a storage partition administrator is not granted write access to a particular function, view access is available. • System Information • Information (Read O
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Figure 3 Storage Administrator and Storage Partition Administrator Privileges . Possible Interacting and Conflicting Functions It is possible for actions taken by a storage administrator to interact and conflict with actions taken by a partition storage administrator. WARNING: If you are using HP StorageWorks XP RAID Manager, you must use command device security for the affected logical volumes, to prevent RAID Manager commands from having effects across SLPR boundaries. For more information on
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• LU path settings and High Speed settings (see the HP StorageWorks XP24000/XP20000 LUN Manager User's Guide) • LUSE settings (see the HP StorageWorks XP24000/XP20000 LUN Expansion User's Guide) If you are using HP StorageWorks XP Continuous Access Journal Software, XP Continuous Access Journal data volumes and journal volumes can belong to the different CLPRs. All journal volumes in the same journal group must belong to the same CLPR. For more information on XP Continuous Access Journal, see th
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4 Using the XP Disk/Cache Partition GUI This chapter describes the windows that comprise the XP Disk/Cache Partition GUI. • Logical Partition Window, page 17 • Storage Management Logical Partition Window, page 19 • Cache Logical Partition Window, page 21 • Select CU Dialog Box, page 23 • License Key Partition Definition Window, page 24 Logical Partition Window To open the Partition Definition window, from the XP Remote Web Console main window click Go, then Environmental Settings. Select Partiti
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Figure 5 Logical Partition Window (Storage System Selected) . Table 2 Logical Partition Window Details (Storage System Selected) Item Description The storage system and all of its logical partitions. The name and number of the Partition definition tree storage logical partition are displayed to the right of each SLPR icon. The list provides the following information: • No.: The storage system resource list number • Item: The resource type (Storage Partition) • Name: The storage logical partition
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Storage Management Logical Partition Window The Storage Management Logical Partition window displays if you select an SLPR in the Partition Definition tree of the Partition Definition tab. If you are logged on as a storage partition administrator, this window shows only the resources in that storage partition. The Storage Management Logical Partition window has the following features. Figure 6 Storage Management Logical Partition Window (SLPR Selected) . Table 3 Storage Management Logical Partit
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Item Description When a storage logical partition is selected the Partition Definition tree, the Storage Logical Partition resource list shows resource information, including logical partitions and ports, for the selected storage logical partitions cache. If SLPR 0 is selected in the Storage Logical Partition tree, this list shows all resources not specifically assigned to another SLPR. The list provides the following information: Storage • No.: The line number logical • Resource Type: The resou
