User manual HP STORAGEWORKS XP CACHE LUN SOFTWARE

[. . . ] HP StorageWorks Cache LUN XP user guide for the XP1024/XP128 Part number: T1616-96002 Second edition: March 2006 Legal and notice information © Copyright 2005, 2006 Hewlett-Packard Development Company, L. P. 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 progress is displayed in percentage. The Prestaging check box is enabled in Modify mode and is selected by default. However, the Prestaging check box is disabled in either of the following conditions: · No cache · Prestaging mode is set to No for each cache LDEV tree The LDEV tree displays the CU number (for example, CU 00) and LDEV number (for example, LDEV 00) available for Cache LUN XP operations in a tree. The tree uses the following icons to show the settings: Table 4 Icon Cache LUN XP icons Description Indicates an LDEV for which Cache LUN XP is not set. Indicates an LDEV for which Cache LUN XP is set. Indicates a LUSE volume (two or more LDEVs) for which Cache LUN XP is not set. 12 Cache LUN XP for the XP1024/XP128 The LDEV tree does not show Auto LUN-reserved volumes because they cannot be used in Cache LUN XP operations. LDEV table Information about the LDEV selected in the tree appears on a single line in the upper-right portion of the pane. It includes LDEV number, emulation type, capacity, and RAID level. The LDEV's capacity is shown in MB for open systems, or cylinders and tracks for mainframe systems. The table shows the cache settings for the LDEV selected in the tree and contains the following columns: · LBA (open systems only): Displays the logical block starting and ending addresses. · CC HH (mainframe systems only): Displays the cylinder and head starting and ending addresses. · Capacity: Displays the capacity of the cache extent in megabytes for open systems. Displays the capacity of the cache extent in cylinders and tracks for mainframe systems. · Mode: Displays the mode of the cache extent. PRIO indicates priority mode, BIND indicates bind mode, and - indicates that the LDEV is not assigned to the cache. · Prestage: If this is blank, then pre-staging is not set. ON indicates that pre-staging is set. Cache LUN pie chart The text above the pie chart lists the used cache and the amount of free space left in cache. In the pie chart, pink indicates the amount of cache available, blue shows cache used, and yellow shows the size of the specified cache extent. Cache settings section Sets the mode and area for data that will reside in the Cache LUN XP cache. Also displays the settings for an existing cache extent. This area contains the following: · Cache LUN Type: Select the Cache LUN XP mode by clicking either Bind or Prio. · Prestaging Mode: Select the Prestaging check box (located above the LDEV tree) to perform the pre-staging operation, and then click Apply. · From: The starting address for data that will reside in the cache. This is expressed as a logical block address for open systems and as a cylinder and head address for mainframe systems. [. . . ] NOTE: You cannot use the Release button to delete the set data until you click Apply or Cancel. 11. To enable the pre-staging function, select the Prestaging check box. To disable the pre-staging function, clear the Prestaging check box. 12. If the settings are correct, click Apply. If prestaging was selected, the prestaging operation will occur next. [. . . ]