HP StorageWorks XP Disk/Cache Partition user guide for the XP12000/XP10000/SVS 200 Part number: T1722–96011 Ninth edition: January 2008
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Contents About this guide ................................................................................... 7 Supported storage platforms and firmware ..................................................................................... Intended audience ...................................................................................................................... Prerequisites ..........................................................................................................................
Figures 1 Example of a CLPR .................................................................................................. 12 2 Example of an SLPR ................................................................................................ 14 3 Partition Definition pane (initial pane or Subsystem selected) ......................................... 17 4 Partition Definition pane (CLPR selected) .....................................................................
Tables 1 Document conventions ............................................................................................... 8 2 Capacity for data in a hard disk drive associated with a CLPR and standard cache capacity ................................................................................................................ 13 3 Command View user group permissions ..................................................................... 15 4 XP Remote Web Console mapping to Command View users ...........
About this guide This guide provides information about: • • • • • • Understanding XP Disk/Cache Partition Understanding partition administration and administrator rights Accessing XP Disk/Cache Partition Working with CLPRs Working with SLPRs Troubleshooting XP Disk/Cache Partition Supported storage platforms and firmware In this guide, the term array refers to the following storage platforms: • HP StorageWorks XP12000 Disk Array • HP StorageWorks XP10000 Disk Array • HP StorageWorks 200 Storage Virtualiza
Related documentation The following documents provide related information: • • • • • HP StorageWorks XP glossary HP StorageWorks XP Remote Web Console user guide for XP12000/XP10000/SVS200 HP StorageWorks Cache LUN XP user guide for the XP12000/XP10000/SVS200 HP StorageWorks External Storage XP user guide HP StorageWorks LUN Configuration and Security Manager XP user guide for the XP12000/XP10000/SVS200 You can find these documents at http://www.hp.
NOTE: Provides additional information. TIP: Provides helpful hints and shortcuts. HP technical support Telephone numbers for worldwide technical support are listed on the HP support Web site: http:// www.hp.
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1 Overview of XP Disk/Cache Partition HP StorageWorks XP Disk/Cache Partition enables logical partitioning of the resources in the array. HP StorageWorks XP Disk/Cache Partition contains the cache logical partition function (CLPR) and the storage management logical partition function (SLPR). The cache logical partition function enables you to partition the built-in cache memory in the array into multiple virtual cache memories.
Figure 1 Example of a CLPR To create a CLPR, allocate the parity groups to CLPR. For instructions on allocating parity groups, see Working with CLPRs. To create and manage a CLPR, you need user authority for the array. For more information about user authority, see Partition administration and administrator rights and the HP StorageWorks XP Remote Web Console user guide for XP12000/XP10000/SVS200.
NOTE: The PCR capacity (MB) described in the formula is the Partial Cache Residence capacity (MB). For more information about standard cache capacity, see Table 2. Table 2 Capacity for data in a hard disk drive associated with a CLPR and standard cache capacity Capacity for data in CLPR Standard cache capacity to 0.7TB to 2.6TB to 8.5TB to 14.4TB to 20.3TB 20.
In a non-partitioned environment, a full array is considered one single partition SLPR0. After the array is partitioned, SLPR0 becomes the unpartitioned portion of the array. Similarly, CLPR0 contains all parity groups (PGs) and cache in the non-partitioned environment. After the array is partitioned, CLPR0 contains the remaining PGs and cache that are not allocated to other CLPRs. Figure 2 shows an example of when one array is partitioned into two virtual arrays.
NOTE: If you allocate local array resources belonging to the following CU groups to an SLPR other than SLPR0, you cannot use the resources: • CU40-7F • CU80-BF • CUC0-FE Do not allocate resources belonging to these CU groups to an SLPR other than SLPR0. Partition administration and administrator rights The following groups of users can access XP Disk/Cache Partition: • Administrators who have modify access to the full array. • StorageAdmins who have modify access.
User group Permissions Command View user group Users NOTE: Storage Partition Administrator with general permissions • Access assigned partitions only The Command View Users group is • Manage assigned partitions mapped to the XP Remote Web Console Users group with modify permissions disabled.
2 Accessing XP Disk/Cache Partition 1. 2. 3. Launch Command View XP or XP Remote Web Console. Click the Install button ( ). The License Key pane appears. Click the Partition Definition tab. Figure 3 Partition Definition pane (initial pane or Subsystem selected) • Tree: Displays SLPRs in the array. The SLPR number and name appear to the right of the SLPR icon ( ). SLPRs belonging to a CU group other than the current CU group have this icon ( grayed out.
NOTE: For SLPR0, the cache capacity and number of CLPRs appear as follows: • Cache capacity: Value is calculated by subtracting the capacity of the cache belonging to a CU group other than the current CU group from the cache capacity that SLPR0 has. • Number of CLPRs: Value is calculated by subtracting the number of CLPRs belonging to a CU group other than the current CU group from the number of CLPRs that SLPR0 has. Regardless of which CU group is selected, CLPR0 is added as one CLPR.
3 Working with CLPRs Figure 4 Partition Definition pane (CLPR selected) • CU: Displays the selected CU's parity groups in the CLPR resource list. NOTE: You cannot specify the number of a CU belonging to a CU group other than the current CU group. To change the CU group, use the drop-down list for CU groups in the upper right of the XP Remote Web Console main pane. For more information about CU groups, see the HP StorageWorks XP Remote Web Console user guide for XP12000/XP10000/SVS200.
• Address: Parity group's address. If the address begins with E (for example, E1-1), the parity group contains external LUs. If the address begins with V (for example, V1-1), the parity group contains virtual volumes. • Properties: For a parity group containing internal volumes of the array, the parity group's capacity and the RAID configuration appear. For a parity group containing external LUs, the external LUs' capacity appears, but the RAID configuration does not appear.
NOTE: The value selected for this CLPR must be bigger than the total amount of Partial Cache Residence that has already been defined for this CLPR using Cache LUN XP. Check the total amount of Partial Cache Residence that has already been defined in Cache LUN XP before changing the value. NOTE: You cannot change the capacity value of CLPR0 directly. If you change another CLPR's capacity, the difference is reflected in CLPR0's capacity.
IMPORTANT: Disk/cache partitioning for the SVS200 is limited to one SLPR and four CLPRs. NOTE: Only the Administrators can create CLPRs. NOTE: If you create a CLPR, the default cache size is 4 GB. To create a CLPR, the desired cache size is allocated from CLPR0 (entire cache). NOTE: To create a CLPR, the remaining cache size, which is calculated by subtracting Cache LUN XP Size and Partial Cache Residence Size from the Cache Size of CLPR0, must be 4 GB or more. 1.
6. To allocate parity groups to a CLPR, migrate the parity groups from another CLPR (see Migrating parity groups in CLPRs). NOTE: To change an existing CLPR's settings, repeat step 3 through step 6. Deleting CLPRs If you delete a CLPR, the resources (that is, parity groups) in the CLPR are automatically returned to CLPR0. NOTE: The CLPRs which are not necessary may be deleted. Note, that you cannot delete CLPR0. 1.
NOTE: You cannot migrate parity groups to a CLPR belonging to a CU group other than the current CPLR. NOTE: Multiple parity groups that construct the concatenated parity group must belong to the same CLPR. NOTE: You cannot migrate the parity group that contains the LDEVs to which the Cache Residency cache extents is defined to another CLPR. 1. Confirm the current CU group in the drop-down list for CU groups in the upper right of the XP Remote Web Console main pane.
6. Click Apply The progress bar appears.
Working with CLPRs
4 Working with SLPRs Figure 5 Partition Definition pane (SLPR selected) • Tree: Displays SLPRs and CLPRs in the array. The SLPR number and name appear on the right of the SLPR icon ( ). The CLPR number and name appear on the right of the CLPR icon ( SLPRs belonging to a CU group other than the current CU group have this icon ( ). ) and are grayed out. CLPRs belonging to a CU group other than the current CU group have this icon ( and are grayed out. You cannot select these SLPRs and CLPRs.
NOTE: Information about CLPR0 appears regardless of which CU group is selected. • No.: List's line number. • Resource Type: Type of the SLPR's resources: Cache Partition or Port. • Name: CLPR or port name. If the resource type is Cache Partition, the CLPR number and name appear. If the resource type is Port, the port name appears. • Properties: CLPR's capacity and number of parity groups allocated to the specified CLPR.
To add a CU to the specified SLPR and return the CU to the CU list, select the CU from the list, and click Add. A CU number with an asterisk (*) indicates the SSID is registered to the CU. You can select up to 64 CUs into which the SSIDs are registered or not. NOTE: If users in the StorageAdmins group who have partition-level access want to use the Customized Volume function, first specify the CU for each SLPR to prevent overlapping the newly allocated CU numbers and the existing CU numbers in other SLPRs.
NOTE: If users in the StorageAdmins group who have partition-level access use the Customized Volume function, first specify the SSID number for the SLPR to prevent overlapping newly allocated SSID numbers and existing SSID numbers in another SLPR. • Apply: Applies settings. NOTE: You can make changes for more than one CU group before implementing the settings. • Cancel: Cancels settings entered or selected, and restores settings to their initial values.
NOTE: You cannot migrate mainframe volumes out of SLPR0. All mainframe volume operations can be performed by storage administrators, not storage partition administrators. NOTE: You can assign a user to an SLPR that has not yet been created. However, if the SLPR does not exist, an error occurs when that user attempts to launch Command View AE or XP Remote Web Console. Creating SLPRs If you have not yet created an SLPR in the array, all of the array's resources (that is, CLPRs and ports) belong in SLPR0.
4. Change the SLPR's settings as needed. 5. Click Apply. A progress bar appears. NOTE: Even though you clicked Apply, the resources (CLPRs and ports) have not been allocated to an SLPR yet. 6. To allocate resources (CLPRs and ports) to an SLPR, perform one or both of the following: a. Create a CLPR in an SLPR (see Creating CLPRs). b. Migrate a port from another SLPR (see Migrating an SLPR's resources). NOTE: To change an existing SLPR's settings, repeat step 3 through step 6.
3. Click Apply. The progress bar appears. Migrating an SLPR's resources You can migrate CLPRs and ports that are managed in an SLPR to another SLPR. NOTE: You cannot migrate CLPRs and ports to an SLPR belonging to a CU group other than the current SLPR. NOTE: You can migrate only Target ports to another SLPR. You cannot migrate Initiator, RCU Target, and External ports. NOTE: A NAS port belonging to the same channel adapter must belong to the same SLPR.
4. Right-click the SLPR you want to migrate the CLPR or port to, and select Paste CLPRs, Ports. If you migrated CLPRs, they are added to the tree and SLPR resource list. If you migrated ports, they are added only to the SLPR resource list. NOTE: You must select an SLPR that has this icon ( SLPR. ) and black characters for the destination NOTE: The LUN0000 and LUN0001 belonging to the NAS-Sys host group must belong to the same SLPR as the NAS port.
5 Troubleshooting Table 6 provides general troubleshooting instructions for XP Disk/Cache Partition operations. Table 6 General troubleshooting for XP Disk/Cache Partition Error All XP Disk/Cache Partition functions cannot be performed. Port The specified port cannot be migrated to another SLPR. Parity group The parity group administered in a CLPR cannot migrate to a CLPR in another SLPR. NAS system LU The parity group administrated in a CLPR cannot migrate to a CLPR in another SLPR.
Error Corrective Action Check the settings, and migrate the parity group defined to the LU to the CLPR defined to the SLPR to which the LU migrated, if necessary. LUSE volume A parity group that is administrated in a CLPR migrated to another CLPR. A port in High Speed mode The LUSE volume associated to the parity group administrated in a CLPR is set across multiple CLPRs. Check the settings, migrate the entire LUSE volume to the CLPR to which the parity group migrated, if necessary.
6 Notes, restrictions, and requirements This chapter provides additional information about using SLPRs and CLPRs. CLPRs • When creating a partition, the partition's license keys are disabled by default. Use the License Key Partition Definition pane to enable license keys for the new partition. Basic license keys include XP Web Console and Java® API. Both are required to enable the Web GUI for new partitions. • Adding or changing a CLPR definition can take several hours.
• • • • • Auto LUN XP manual migration Business Copy XP Quick Restore LU path settings High Speed mode settings Creating a LUSE volume • Mainframe volumes must be allocated to SLPR0. • Before a customized volume (CV) is created, the StorageAdmins user must allocate CU numbers to the SLPR. Allocated CU numbers are required only for defining the CU number to be allocated to the LDEV when the StorageAdmin user creates a CV.
Index A H accessing XP Disk/Cache Partition, 17 administering SLPRs, 30 administrator rights, 15 arrays, virtual, 13 audience, documentation, 7 help, obtaining, 9, 9 HP storage web site, 9 Subscriber's Choice for Business web site, 9 technical support, 9 C I cache logical partitions.
T technical support, HP, 9 text symbols, 8 U users, access rights of, 15 V virtual arrays, 13 W web sites HP documentation, 9 HP storage, 9 HP Subscriber's Choice for Business, 9 40
