HP StorageWorks XP24000 Disk/Cache Partition User's Guide Part number: T5214–96004 First edition: June 2007
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Contents About this Guide . . . . . . . . . . . . . . . . . . . . . . . . . . Intended Audience . . . . . . . . . . Related Documentation . . . . . . . . Document Conventions . . . . . . . . Conventions for Storage Capacity Values Window Illustrations . . . . . . . . . HP Technical Support . . . . . . . . . Subscription Service . . . . . . . . . HP Websites . . . . . . . . . . . . Documentation Feedback . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figures 1 ..An Example of Storage Management Logical Partition Function . . . . . . . . . . . . 14 2 ..An Example of Cache Logical Partition . . . . . . . . . . . . . . . . . . . . . . 15 3 ..Storage Administrator and Storage Partition Administrator . . . . . . . . . . . . . . 18 4 ..An Example of Performing Manual Migration between SLPRs . . . . . . . . . . . . . 21 5 ..The License Key Partition Definition Window . . . . . . . . . . . . . . . . . . . . 24 6 ..Program Product List . . . . . . . .
Tables 1 ..Document Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2 ..Capacity for the Data in a Hard Disk Drive that is Associated with a CLPR and the Recommended Cache Capacity . . . . . . . . . . . . . . . . . . . . . . . . . . 16 6 3 ..Available Functions for the Storage Partition Administrator . . . . . . . . . . . . . . 18 4 ..General Troubleshooting for the Disk/Cache Partition Operations . . . . . . . . . . . 39 5 ..Acronyms and Abbreviations 41 . . . . . . . . .
About this Guide This user's guide describes and provides instructions for performing Disk/Cache Partition operations on the HP storage system. The term storage system in this guide refers to an HP StorageWorks XP24000 Disk Array.
• 1 MB (megabyte) = 1,0002 bytes • 1 GB (gigabyte) = 1,0003 bytes • 1 TB (terabyte) = 1,0004 bytes HP XP storage systems use the following values to calculate logical storage capacity values (logical devices): • • • • • 1 1 1 1 1 KB (kilobyte) = 1,024 bytes MB (megabyte) = 1,0242 bytes GB (gigabyte) = 1,0243 bytes TB (terabyte) = 1,0244 bytes block = 512 bytes Window Illustrations The windows shown in this guide were displayed on a Windows computer with the Internet Explorer browser.
To make comments and suggestions about product documentation, send a message to storagedocsFeedback@hp.com. All submissions become the property of HP.
About this Guide
1 Overview of HP StorageWorks XP Disk/Cache Partition The HP storage system can connect to multiple hosts and 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 large number of I/O requests, the I/O performance of other hosts may decrease. If the various administrators have different storage policies and procedures, or issue conflicting commands, that can cause difficulties.
Overview of HP StorageWorks XP Disk/Cache Partition
2 About Disk/Cache Partition Operations The storage systems can connect multiple hosts and can be shared by multiple departments in an enterprise, and also shared by multiple companies. Under this circumstances, if a host issues a lot of I/O requests, the I/O performance of other hosts may decrease. If a subsystem's administrator of a department or an enterprise performs an inappropriate operation, there is a possibility that data of other departments or companies are leaked or broken.
Figure 1 An Example of Storage Management Logical Partition Function To create SLPR, allocate the resources of storage system, that is, ports and CLPRs. For instructions on allocating the resources of storage system, see “Performing Disk/Cache Partition Operations” on page 33. To create a CLPR and manage it, you need a user authority for storage sys tem, that is, Storage Administrator.
down the read/write speed under the influence of data access amount of branch A. The hosts of other branches always can use up to 40 Gbytes cache area. The virtual cache memory that is partitioned by using the cache logical partition function is referred to as the CLPR. Up to 32 CLPRs including CLPR0 which is provided as a default can be created in one subsystem. See “Cache Logical Partition Operations” on page 35 for creating CLPR.
Table 2 Capacity for the Data in a Hard Disk Drive that is Associated with a CLPR and the Recommended Cache Capacity Recommended Cache Capacity Capacity for the Data in CLPR Less than 720GB 4GB or more 720GB or more 8GB or more 2,900GB or more 12GB or more 8,650GB or more 16GB or more 14,400GB or more 20GB or more 20,160GB or more 24GB or more 128,000GB or more 28GB or more 146,000GB or more 32GB or more 182,000GB or more 40GB or more 218,000GB or more 48GB or more 254,000GB or more 56
3 Preparing for Disk/Cache Partition Operations Storage Administrator and Storage Partition Administrator Privileges To use HP StorageWorks XP Remote Web Console, you need a user account. The user account of Remote Web Console contains the following information. • • • • User ID User type Password Operation authority For Remote Web Console, the user account of administrator is initially set. The password of user ID administrator is administrator by default.
Figure 3 Storage Administrator and Storage Partition Administrator Possible Interacting and Conflicting Functions The storage partition administrators can display only SLPR(s) which they administrate. They cannot display and also operate the SLPR(s) which they do not administrate. In addition, the functions that the storage partition administrators can operate are limited.
Icon Function Function Detail Available/Not available HP StorageWorks XP Continuous Access Software Continuous Access Not available HP StorageWorks XP Continuous Access Journal Software Continuous Access Journal Not available HP StorageWorks XP Business Copy Software Business Copy Not available TrueCopy for Mainframe TrueCopy for Mainframe Not available Universal Replicator for Mainframe Universal Replicator for Mainframe Not available ShadowImage for Mainframe ShadowImage for Mainframe
• • • • • • • • • 20 Creation of a LUSE volume Adding or changing the definition of the CLPR requires several hours or more. The mainframe volumes must be allocated to SLPR0. All operations of the mainframe volumes can be performed by the storage administrators, not the storage partition administrators. The target ports must be allocated to the SLPRs other than SLPR0. We do not recommend that the following operations with CLPRs are performed.
Figure 4 An Example of Performing Manual Migration between SLPRs XP24000 Disk/Cache Partition User's Guide 21
Preparing for Disk/Cache Partition Operations
4 Using the Disk/Cache Partition GUI “Using the Disk/Cache Partition GUI” on page 23 describes the License Key Partition Definition window and the Partition Definition window which you need to use Disk/Cache Partition. The License Key Partition Definition Window When the storage partition administrators want to use the Remote Web Console options for their own SLPRs, the licensed capacity for each option has to be partitioned and allocated to each SLPR.
• In the following cases, the licensed capacity allocated to all the SLPRs will be initialized, and the program product of that license changes its status to Capacity Insufficient. • Since the license expires, the licensed capacity for the corresponding program product becomes insufficient. • You re-install the program product with limited licensed capacity, which previously had the unlimited licensed capacity. In these cases, re-install the program product to each SLPR within 30 days.
Figure 6 Program Product List The program product list of the License Key Partition Definition window has the following features: • The Product Name column includes: • Option name • • • • • Icon that indicates whether the option is available ( indicates Installed; indicates Not Installed) The Key Type column shows the license type: Permanent, Temporary or Emergency. Not Installed is displayed, when the option is not installed. The Permitted Volumes column shows the available capacity (licensed capacity).
When you select a program product in the list, the Partition Status list and Setting box are displayed under the information on the licensed capacity (see Figure 8 on page 26 and Figure 9 on page 26). The storage administrator can partition the licensed capacity and allocate to each SLPR using the Partition Status list and Setting box. Figure 8 Partition Status List and Setting Box Figure 9 Setting Box for Program Product with Unlimited Licensed Capacity or that does Not Depend on Licensed Capacity.
(see Figure 8 on page 26). You can enter the number indicating the licensed capacity to be allocated to the SLPR. After you have finished the setting in the Setting box, select the Set button to preserve the setting. As you select the Set button, the selected row of the program product list and the Partition Status list change to blue bold italics. The displayed capacity in the Remaining Capacity also changes to the capacity after the setting is applied.
• • • • • Name: SLPR numbers and SLPR names Cache (Num. of CLPRs): Cache capacity and the number of CLPRs that each SLPR provides. Num of PGs: Number of parity groups that each SLPR has. Num of Ports: Number of ports that each SLPR has. Status: If SLPR has been edited, the status of the SLPR is displayed on the right-most column of the list. Change: is shown if the information for SLPR, for example, SLPR name, has been changed. Delete: is shown if SLPR has been deleted.
• SLPR resource list on the right side of the tree: displays the information for resources in the specified SLPR, that is, CLPRs and ports. Note: If SLPR0 is selected from the tree, all resources (CLPRs and ports) that have not been allocated to any SLPRs yet are displayed in the list. • No.: Row number • Resource Type: Type of resources of SLPR. Cache Partition or Port(port type). • Name: Name of CLPR or port If the resource type is Cache Partition, CLPR number and CLPR name are displayed.
The Cache Logical Partition Window When you open the Partition Definition window by using the Remote Web Console main window, the tree and the resource list are displayed. SLPRs which this subsystem provides are displayed under the tree. If you select CLPR from the tree, the Partition Definition window displays the information for CLPR that is selected. You may define the parity group or the external volume group, Cache Size, Cache Residency Size, the number of Cache Residency areas.
• Properties: For the parity group containing internal volumes of storage system, the capacity of parity group and the RAID configuration are displayed. For the parity group containing external volumes, the capacity of external volumes is displayed, but the RAID configuration is not displayed. For the parity group containing virtual volumes, the capacity of virtual devices (VDEVs) is displayed, but the RAID configuration is not displayed. • Emulation: Emulation type of the parity group.
Using the Disk/Cache Partition GUI
5 Performing Disk/Cache Partition Operations “Performing Disk/Cache Partition Operations” on page 33 describes the operations of Disk/Cache Partition.
3. Select an SLPR from the tree (see Figure 11 on page 28). 4. Change the variables in Details for SLPR area with Partition Definition window as needed (see “The Storage Management Logical Partition Window” on page 28). 5. Click Apply to apply the settings. The progress bar is displayed. Note: Even though you clicked Apply, the resources (CLPRs and ports) have not been allocated to an SLPR yet.
Cache Logical Partition Operations Creating a Cache Logical Partition If you have not created only one CLPR yet, entire cache is indicated CLPR0 in the Partition Definition window. To partition the cache, create a CLPR. The created CLPR can be allocated to each SLPR. The CLPR(s) can be created in a SLPR that you selected. Note: Only the storage administrators can create the CLPRs. The storage partition administrators are not permitted to create CLPR.
5. Select the CLPR that you want to migrate the parity groups to from the tree and right-click to display the pop-up menu. 6. Select Paste Parity Group from the pop-up menu. The selected parity groups are added to the CLPR resource list. 7. Click Apply to apply the settings. The progress bar is displayed. Figure 13 Select CU Dialog Box • If you select All CUs radio button, information about all CUs can be displayed on the CLPR resource list.
“Storage Administrator and Storage Partition Administrator Privileges” on page 17 in this manual and the HP StorageWorks XP24000 Remote Web Console User’s Guide. To partition the licensed capacity and allocate the licensed capacity to SLPR from the License Key Partition Definition window: 1. 2. 3. 4. 5. 6. 7. 8. 9. Log on with the user ID of a storage administrator to display the Remote Web Console main window. Change to Modify mode.
Performing Disk/Cache Partition Operations
6 Troubleshooting Troubleshooting Table 4 on page 39 provides general troubleshooting instructions for Disk/Cache Partition operations. Table 4 General Troubleshooting for the Disk/Cache Partition Operations Error Corrective Action All functions of Disk/Cache Partition cannot be operated. If you logged on to the Remote Web Console as the storage partition administrator to use the Disk/Cache Partition software, you cannot operate.
Displaying an Error Message If the settings contain the discrepancy after you select Apply button to apply the settings, an error message will be displayed. Even if you click OK or Cancel to close the message after seeing the error message, you may see the latest error message. To display an error message again: 1. Right-click an SLPR on the tree to display the pop-up menu. 2. Click Error Detail from the pop-up menu to display the message dialog box. 3. Click OK to close the message dialog box.
A Acronyms and Abbreviations Table 5 Acronyms and Abbreviations CU control unit CLPR cache logical partition I/O input/output IBM International Business Machines Corporation IMPL initial microcode load IMS Information Management System IOCDS I/O configuration dataset LAN local-area network LCP local control port LED light-emitting diode LUN logical unit (also called device emulation or device type) Mb/s megabits per second NVS nonvolatile storage PC personal computer system RAID
Acronyms and Abbreviations
Index A About Disk/Cache Partition Operations, 13 audience, 7 C conventions document, 7 storage capacity values, 7 D document conventions, 7 related documentation, 7 documentation HP website, 7 providing feedback, 8 H help obtaining, 8 HP technical support, 8 R related documentation, 7 S storage capacity values conventions, 7 storage systems supported models, 7 Subscriber's Choice, HP, 8 T technical support HP, 8 service locator website, 8 W websites HP, 8 HP Subscriber's Choice for Business,
