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 .............................................................................................. Benefits of Disk/Cache Partition .................................................................................................... Improves Security .................................................................................................................
Conventions for Storage Capacity Values ..................................................................................... HP Technical Support ................................................................................................................ Subscription Service .................................................................................................................. HP Websites ........................................................................................................
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 .............................................................................
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 ...........................................................
1 Overview of HP StorageWorks XP Disk/Cache Partition Software This chapter provides an introduction to XP Disk/Cache Partition Software.
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.
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.
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.
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.
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 + the number of 6D+2P parity groups + the number of 7D+1P parity groups + the number of 2D+2D parity groups capacity of one HDD x x capacity of one HDD x capacity of one HDD x capacity of one HDD To calculate the cache
3 Preparing for XP Disk/Cache Partition Operations This chapter discusses the preparation needed for XP Disk/Cache Partition operations.
• 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 assigned 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.
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.
• 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.
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.
Figure 5 Logical Partition Window (Storage System Selected) . Table 2 Logical Partition Window Details (Storage System Selected) Item Description Partition definition tree The storage system and all of its logical partitions. The name and number of the storage logical partition are displayed to the right of each SLPR icon. The list provides the following information: • No.
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) .
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. Storage logical partition resource list The list provides the following information: • No.
Item Description Cancel Cancels any settings that were made in this window Cache Logical Partition Window The Cache Management Logical Partition window (see Figure 7) displays if you select a CLPR 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 Cache Logical Partition window has the following features. Figure 7 Cache Logical Partition Window (CLPR Selected) .
Item Description Partition Definition tree All of the storage logical partitions and cache logical partitions in the storage system. The storage logical partition number and name are displayed to the right of the each SLPR icon ( ). The cache logical partition number and name are displayed to the right of the CLPR icon ( ). When a CLPR is selected in the Partition Definition tree, the Cache Logical Partition resource list show the resource information for the selected CU and CLPR.
Item Description Allows you to set or change the settings of the specified cache logical partition. See “Cache Logical Partition Operations” on page 31 for more information on cache logical partition operations. You cannot directly change the capacity value of CLPR 0. Any changes in the capacity of the other CLPRs will be reflected in the capacity of CLPR 0.
Figure 8 Select CU Dialog Box . Table 5 Select CU Dialog Box Details Item Description All CUs When selected, information about all CUs can be displayed on the CLPR resource list. When selected, information about only the specified CU can be displayed on the CLPR resource list. Specific CU • Use the LDKC list to specify LDKC • Use the CU list to specify CU Unallocated When selected, only the information about CUs unallocated to CLPR is displayed on the CLPR resource list.
Figure 9 License Key Partition Definition Window . The Product Name list is on the upper part of the window (see Figure 10), and lists the program products for which the licensed capacity can be allocated to SLPRs. Figure 10 Product Name List .
Item Description Key Type The license type: Permanent, Temporary or Emergency. Not Installed is displayed, when the option is not installed. Since all the SLPRs will be available when the key type of the program product is Temporary or Emergency, you do not need to separate each SLPR.
After selecting an option, Partition Status List and Setting Box is displayed under the information about the licensed capacity (see Figure 12, Figure 13, and Figure 14). This allows you to select and display information regarding a storage logical partition. Figure 12 Partition Status List . The Partition Status list provides the following information for the selected option. Table 8 Partition Status List Details Item Description SLPR Name Storage logical partition name.
If you select an option with a limited license capacity, the Setting box looks like Figure 14. You may enter the licensed capacity to be allocated to the SLPR. However, you cannot set the licensed capacity of SLPR0. If you select SLPR0, Set will be inactive. Figure 14 Setting Box (License Capacity Limited) . Table 10 Setting Box Details (License Capacity Limited) Item Description Selects the setting.
5 XP Disk/Cache Partition Operations This chapter provides detailed instructions for XP Disk/Cache Partition operations. • Storage Logical Partition Operations, page 29 • Cache Logical Partition Operations, page 31 Storage Logical Partition Operations Storage logical partition operations have the following requirements: • You must have storage administrator access for all storage logical partition actions described in this section.
• In the From field, enter the starting number of the SSID (0004 to FFFE). • In the To field, enter the ending number of the SSID. 6. Click Apply to apply the settings, or click Cancel to cancel the settings. Note: At this point in the process, the newly created storage logical partition has no resources (for example, cache logical partitions and ports). See “Migrating Resources To and From Storage Logical Partitions” on page 30 for instructions on migrating resources.
2. 3. 4. 5. 6. From the Storage Logical Partition Resource List, select one or more cache logical partitions and/or target ports to be migrated. Right-click to display the pop-up menu, then click Cut. SLPRs from other CUs are grayed out and unavailable. On the Partition Definition tree, select the SLPR to which you want to migrate resources. SLPRs from other CUs are grayed out and unavailable. Right-click to display the pop-up menu, then click Paste CLPRs, Ports.
• Adding or changing CLPR definitions can require several hours or more. • If you are using XP Continuous Access Journal, data and journal volumes can belong to the different CLPRs, but the journal volumes in the same journal group must belong to the same CLPR. For more information on XP Continuous Access Journal, see the HP StorageWorks XP24000/XP20000 Continuous Access Journal Software User's Guide and the Hitachi Universal Replicator™ for Mainframe User's Guide: HP XP24000/XP20000 Disk Array .
6. If you want to change the settings of an existing CLPR, repeat steps 3 through 5. NOTE: Note: At this point, the cache logical partition has no parity groups. See “Migrating Resources To and From Cache Logical Partitions” on page 33 for more information on migrating resources to and from cache logical partitions. Migrating Resources To and From Cache Logical Partitions Notes: • • • • You can only migrate resources within the same CU. All concatenated parity groups must be in the same CLPR.
Figure 17 Selecting the CU . Table 11 Selecting the CU Item Description All CUs Displays the information for all CUs in the CLPR resource list. Displays the information for specified CU in the CLPR resource list. Specific CU • The LDKC drop-down list allows you to select the LDKC. • The CU drop-down list allows you to select the CU. Unallocated Displays the information for the unallocated CUs in the CLPR list. Set Implements the setting in the storage system. Cancel Cancels the setting.
6 Troubleshooting This chapter describes some troubleshooting methods if you have problems with Disk/Cache Partition. • • • • General Troubleshooting, page 35 Displaying an Error Message, page 35 Troubleshooting Disk/Cache Partition, page 35 Calling HP Technical Support, page 36 General Troubleshooting • For troubleshooting information on the storage system, see the HP StorageWorks XP24000 Disk Array Owner's Guide or the HP StorageWorks XP20000 Disk Array Owner's Guide.
Error Corrective Action When you attempt to migrate a parity group to a CLPR in another SLPR, an LU warning message is displayed. • LUs in parity groups must remain within the same SLPR. When you attempt to migrate a CLPR to another SLPR or deleted that CLPR, an LU warning message is displayed. • LUs in parity groups must remain within the same SLPR. When you attempt to migrate a port to another SLPR, an LU warning message is displayed.
7 Support and Other Resources Related Documentation • • • • • • • HP HP HP HP HP HP HP StorageWorks StorageWorks StorageWorks StorageWorks StorageWorks StorageWorks StorageWorks XP24000/XP20000 Cache Residency Manager User's Guide XP RAID Manager User’s Guide XP24000/XP20000 Data Retention Utility User's Guide XP24000/XP20000 LUN Expansion User's Guide XP24000/XP20000 LUN Manager User’s Guide XP24000/XP20000 Performance Monitor User's Guide XP24000/XP20000 Auto LUN Software User's Guide • HP StorageWork
• 1 GB (gigabyte) = 1,0243 bytes • 1 TB (terabyte) = 1,0244 bytes • 1 PB (petabyte) = 1,0245 bytes • 1 block = 512 bytes HP Technical Support For worldwide technical support information, see the HP support website: http://www.hp.
A Acronyms and Abbreviations Table 13 Acronyms and Abbreviations CLPR cache logical partition CU control unit CV customized volume DASD direct-access storage device host group Used to segregate hosts by operating system platform. Also known as a host storage domain.
VLL Virtual LVI/LUN V-VOL virtual volume WWN world wide name XRC extended remote copy z/OS IBM z/OS operating system 40 Acronyms and Abbreviations
Index A allocating license capacity storage logical partitions (SLPRs), 30 allocating ports to SLPRs restrictions on port type, 29 Auto LUN manual migration across multiple CLPRs restrictions, 32 B Business Copy quick restore operations across multiple CLPRs restrictions, 32 C cache logical partitions overview, 10 cache memory for CLPR operations restrictions, 31 CLPR overview, 10 CLPR operations, 31 creating a CLPR, 32 deleting CLPRs, 34 migrating resources among CLPRs, 33 Continuous Access asynchronous
O operations CLPR, 31 creating a CLPR, 32 creating an SLPR, 29 deleting CLPRs, 34 deleting SLPRs, 31 migrating resources among CLPRs, 33 migrating resources among SLPRs, 30 SLPR, 29 operations not recommended for CLPRs restrictions, 32 overview Cache Logical Partitions (CLPR), 10 storage logical partitions (SLPR), 9 P production machines restrictions on CLPR operations, 31 R related documentation, 37 restrictions, 29 Auto LUN manual migration across multiple CLPRs, 32 Business Copy quick restore operation
