HP StorageWorks XP Disk/Cache Partition user guide Part number: T1722-96003 Third edition: December 2005
Legal and notice information © Copyright 2005 Hewlett-Packard Development Company, L.P. Confidential computer software. Valid license from HP required for possession, use or copying. Consistent with FAR 12.211 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. The information contained herein is subject to change without notice.
Contents About this guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Intended audience . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Prerequisites. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Firmware versions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Related documentation . . . . . . . . . . . . . .
About this guide This guide provides information about the following: • ”Storage management logical partitions (SLPRs)” on page 10 • ”Cache logical partitions (CLPRs)” on page 9 Intended audience This guide is intended for customers and HP-authorized service providers with knowledge of the following: • Disk array hardware and software • Data processing and RAID storage subsystems and their basic functions Prerequisites Prerequisites for using this product include: • Installation of the HP StorageWorks dis
Document conventions and symbols Table 2 Document conventions Convention Element Blue text: Table 1 Cross-reference links and e-mail addresses Blue, underlined text: (http://www.hp.
Subscription service HP strongly recommends that customers register online using the Subscriber's choice web site: http://www.hp.com/go/e-updates. Subscribing to this service provides you with e-mail updates on the latest product enhancements, newest driver versions, and firmware documentation updates as well as instant access to numerous other product resources. After subscribing, locate your products by selecting Business support and then Storage under Product Category.
1 XP Disk/Cache Partition for the XP10000/XP12000 The HP StorageWorks XP Disk/Cache Partition feature prevents performance degradation and data loss that occur when connecting multiple hosts and sharing disk arrays among multiple departments and multiple companies. XP Disk/Cache Partition provides a mechanism to safeguard disk array configurations by isolating operational areas. There is a possibility of changing or deleting a configuration created for a specific customer by mistake.
Virtual cache memory that the cache logical partition function partitions is referred to as CLPR. Figure 1 Example of a CLPR Figure 1 shows how a corporation’s cache memory is partitioned to three virtual cache memories. Although the Branch A host is inputting and outputting a large amount of data, the Branch B and Branch C hosts are unaffected because each branch is allocated 40 GB CLPR.
parity groups (PGs) and cache in the non-partitioned environment. After the disk array is partitioned, CLPR0 contains the remaining PGs and cache that are not allocated to other CLPRs. Figure 2 Example of an SLPR Figure 2 shows an example of one disk array partitioned into two virtual disk arrays. Each virtual disk array is allocated to one enterprise. Enterprise A’s disk array administrator can manage enterprise A’s virtual disk array, but cannot manage enterprise B’s disk array.
Table 4 XP Remote Web Console mapping to Command View users User group Permissions Storage Administrator with super-user permissions (create users and administer partitions) • • • • Command view user group Modify entire array configuration Administrators Administer partitions and users Download/restore administrative backup lists Configure XP Remote Web Console settings (for example, client timeout values) Storage Administrator with general permissions Modify entire array configuration Storage Par
3. Click the Partition Definition tab. Figure 3 Partition Definition pane This pane contains the following: • Tree: Displays SLPRs in the disk array. The SLPR number and name are displayed to the right of the SLPR icon. • Subsystem resource list: Displays information about SLPRs. • No.: Line number. • Item: Type of resources. • Name: SLPR number and name. • Cache (Num. of CLPRs): Cache capacity and number of CLPRs in the SLPR. • Num of PGs: Number of parity groups in the CLPR of each SLPR.
Working with CLPRs Figure 4 Partition Definition pane (CLPR selected) When a CLPR is selected, the pane displays the following: • CU: Displays the selected CU’s parity groups in the CLPR resource list. • Tree: Lists the disk array’s SLPRs and CLPRs. • CLPR resource list: Displays information about the selected CLPR. • No.: Line number. • Resource Type: Type of CLPR resource: Parity Group, DCR Cache, or PCR Cache. • Address: Parity group’s address.
NOTE: The maximum available cache capacity (capacity of mounted cache minus total amount of usage for other CLPRs) is displayed for each upper limit of Cache Size, Cache LUN Size, Number of Cache LUN Areas, and Partial Cache Residence Size. The remaining capacity, which is calculated by subtracting Cache LUN Size and Partial Cache Residence Size from Cache Size, must be 4 GB or more in CLPR0.
4. Select the CLPR you want to migrate the parity groups to, right-click, and select Paste Parity Group. The selected parity groups are added to the CLPR’s resource list. 5. Click Apply. Working with SLPRs Figure 5 Partition Definition pane (SLPR selected) When an SLPR is selected on the Partition Definition pane, the pane displays the following: • Tree: Displays SLPRs and CLPRs in the disk array. • SLPR resource list: Displays information about the selected SLPR’s resources (CLPRs and ports).
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. If CU numbers are not specified first, users in the StorageAdmins group who have partition-level access cannot use the Customized Volume function. • SSID(* in use): SSID in the selected SLPR (0004 to FFFE).
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 disk array, all of the disk array’s resources are in SLPR0. To divide the resources, create a new SLPR. Only Administrators can create SLPRs. 1. Right-click Subsystem, and select Create SLPR. 2. Select an SLPR. 3. Change SLPR settings as needed. 4.
Displaying error messages If settings contain a discrepancy, an error message appears when you click Apply. To display the error message again, right-click the SLPR, and select Error Detail. Notes, restrictions, and requirements This section provides additional information about using SLPRs and CLPRs. CLPRs • When you create a partition, the partition’s license keys are disabled by default. Use the License Key Partition Definition tab on the Install pane to enable license keys for the new partition.
XP Disk/Cache Partition for the XP10000/XP12000
Index A accessing Disk/Cache Partition 12 administering SLPRs 17 administrator rights 11 audience, documentation 5 C cache logical partitions.
Figures 1 2 3 4 5 Example of a CLPR. . . . . . . . . . . . . . . . . . . . . . . . . . . Example of an SLPR . . . . . . . . . . . . . . . . . . . . . . . . . . Partition Definition pane . . . . . . . . . . . . . . . . . . . . . . . Partition Definition pane (CLPR selected) . . . . . . . . . . . . Partition Definition pane (SLPR selected) . . . . . . . . . . . . .. .. .. .. .. .. .. .. .. .. . . . . . .. .. .. .. .. .. .. .. .. .. . . . . . .. .. .. .. .. . . . . . .. .. .. .. .. .. .. .. .. .. .
Tables 1 2 3 4 5 Recommended and minimum firmware versions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Document conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Command View user group permissions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 XP Remote Web Console mapping to Command View users . . . . . . . . . . . . . . . . . . . . . . . .
