User manual HP STORAGEWORKS LUN CONFIGURATION MANAGER XP SOFTWARE LICENSE

[. . . ] HP StorageWorks LUN Configuration Manager XP user's guide XP48 XP256 XP512 fourth edition (November 2003) part number: B9335-96002 This guide explains how to use the HP StorageWorks LUN Configuration Manager XP software. © 2003, Hewlett-Packard Development Company, L. P. Hewlett-Packard Company makes no warranty of any kind with regard to this material, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. Hewlett-Packard shall not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing, performance, or use of this material. This document contains proprietary information, which is protected by copyright. [. . . ] VSC operations can only be performed when the VSC option is enabled. The procedures for performing VSC operations are different depending on whether you have an XP256 or and XP512. The procedures are divided into two sections. Make sure you are using the correct set of instructions. VSC operations 79 This chapter covers VSC parameters and procedures. The chapter contains three sections: · "VSC parameters" (page 81) · "XP256 VSC operations" (page 83) · "XP512 VSC operations" (page 113) 80 HP StorageWorks LUN Configuration Manager XP: user's guide VSC parameters This section covers · VSC specifications · custom volume capacity · storage subsystem ID (SSID) requirements VSC specifications The following table lists VSC specifications. Each CV has its own assigned unit control block (UCB), and multiple VSC types can be configured within each parity group. The user can add and delete VSC at any time and has complete control over the number of user cylinders and the emulation type of each CV. Parameter Specification Emulation type Minimum size of CV Maximum size of CV OPEN-x 35 MB OPEN-3: 2. 3 GB OPEN-8: 7. 0 GB OPEN-9: 7. 0 GB OPEN-E: 13. 8 GB OPEN-K: 1. 7 GB 1 MB 128 4096 OPEN-3: 5 MB OPEN-8 & 9: 19 MB OPEN-E: 13 MB OPEN-K: 6 MB Size increment Maximum number of volumes (custom and normal) per parity group Maximum number of volumes (custom and normal) per disk array Control (overhead) capacity required per CV VSC operations 81 Custom volume capacity Open system volumes are composed of 512-byte pieces called logical blocks. Logical Block Addresses (LBAs) are used for referring to locations within open system volumes. Use the following table when you configure custom volumes. Capacity (GB = 10003 Bytes) Capacity (GB = 10243 Bytes) Volume Type Logical Blocks OPEN-K OPEN-3 OPEN-8 OPEN-9 OPEN-E 3, 661, 920 4, 806, 720 14, 423, 040 14, 423, 040 28, 452, 960 1. 875 GB 2. 461 GB 7. 384 GB 7. 384 GB 14. 568 GB 1. 831 GB 2. 292 GB 6. 877 GB 6. 877 GB 14. 226 GB Storage subsystem ID (SSID) requirements Each CU contains four logical subsystems, each of which contain 64 logical devices. It may be necessary to specify an SSID when creating custom volumes. Any value can be used for the SSID of OPEN-x devices. The only constraint is that the lowest SSID number used must be evenly divisible by four. 82 HP StorageWorks LUN Configuration Manager XP: user's guide XP256 VSC operations The first step in performing VSC operations is to convert one or more normal-size volumes to VSC volumes. When you convert a normal volume to a VSC volume, all of the logical blocks in the volume become available for use in custom size volumes (CVs). You can define the first CU during the normal-to-VSC conversion process, and you can define additional CVs as needed under that VSC volume up to a maximum of 32 volumes per parity group (array group) using the install CV process. If your disk array was configured with one or more VSC volumes during installation, you can bypass the normal-to-VSC conversion process and begin installing new CVs immediately. VSC operations include: · viewing the current VSC information · converting a normal volume to a VSC volume · installing a CV · deinstalling a CV · converting a VSC volume to a normal volume The following operations are for the XP256 only. VSC operations 83 Starting VSC operations The following procedure describes how to start VSC operations from the Function Select window. Start and log in to the Remote Control software. The Option Select window opens automatically. Select Volume Size Configuration to start VSC operations. The VSC warning message appears to remind you that VSC operations (except Install CV) are destructive. The Function Select window now opens. 5. Select one of the VSC functions: Refer Configuration Normal Volume Install CV View the current VSC of the connected disk array. [. . . ] The number of resulting LDEVs depends on the emulation mode. The term LDEV is often used synonymously with the term volume. A LUN results from mapping a SCSI logical unit number, port ID, and LDEV ID to a RAID group. The size of the LUN is determined by the emulation mode of the LDEV, and the number of LDevs associated with the Lun. [. . . ]