HP XP P9500 Storage - Manual (Page 148)

Description Item
Enables and disables the prestaging function for Cache Residency. Prestaging
If you select the Prestaging check box check box and click Apply, a Yes/No
confirmation is displayed. To perform a Cache Residency operation followed
by a prestaging operation, click Yes. To perform only the Cache Residency
operation, click No .
If you clear the Prestaging check box and click Apply, only a Cache
Residency operation is performed. If you select this check box later and
click Apply, a Yes/No confirmation is displayed. If you click Yes, only the
prestaging operation is performed.
The Prestaging check box is selected by default. The Prestaging check box
is unavailable when the Prestaging Mode is set to No for each cache extent.
The Prestaging check box can be selected only when you are logged in to
Remote Web Console as a storage administrator.
Lists the LDEVs that are available for Cache Residency operations. Tree
The LDEVs are identified by LDKC number, CU number, and LDEV number.
For example, LDEV 00:01:48 is LDEV 48 in CU 01 in LDKC 00. An LDEV
number ending with # (e.g., 00:00:01#) is an external volume. Only the
volumes belonging to the selected CLPR are shown. Volumes that are
reserved for Auto LUN and Hyper PAV alias volumes are not shown, because
these volumes are not available for Cache Residency operations.
The CU:LDEV Tree uses these icons:
: Indicates an open/expanded folder. An open LDKC folder shows the
CUs that belong to that LDKC. An expanded CU folder shows the LDEVs
that belong to that CU.
: Indicates an unopened/unexpanded LDKC or CU folder.
: Indicates that the LDEV is an internal volume for which Cache Residency
is not set or an external volume whose Cache mode is set to Enable.
: Indicates that the LDEV is an internal volume for which Cache Residency
is set or an external volume whose Cache mode is set to Enable.
: Indicates that the LDEV is an external volume where Cache Residency
is not set to Disable but Cache mode is set to Disable.
: Indicates that the LDEV is an external volume that has both Cache
Residency and Cache mode set to Disable.
Select the cache logical partition (CLPR) containing the desired CU(s) and
LDEV(s). CLPR
The CLPR is displayed as CLPR-number : CLPR-name. The Cache Residency
window then shows the cache information for the selected CLPR and the
CUs and volumes belonging to the selected CLPR.
If you administer more than one CLPR, use the CLPR list to select a CLPR by
name and number. If you administer only one CLPR, the CLPR list shows
only the CLPR that you have access to and does not allow you to select
other CLPRs.
Provides detailed information and Cache Residency settings for the LDEV
selected in the CU:LDEV tree. LDEV ID
• DKC:CU:LDEV ("#" after the LDEV number indicates an external volume)
•
Emulation type
• Volume capacity in MB for open-systems LDEVs, in cylinders and tracks
for mainframe LDEVs
•
RAID level
The LDEV information table provides detailed information and Cache
Residency settings for the LDEV selected in the CU:LDEV tree.LDEV. LDEV information
148 Cache Residency GUI reference