HP XP P9500 Storage - Manual (Page 10)

6. In the Detail for CLPR in Storage System section, do the following:
•
In CLPR Name field, type the name of the cache logical partition, in up to 16 alphanumeric
characters. However, it cannot be changed to the CLPR name that is reserved for the
storage system. See
“Cache partitioning rules and guidelines” (page 7) .
•
In Cache Size, select the cache capacity. You may select from 4 to 508 GB, in 2 GB
increments. The default value is 4 GB. The size of the cache is allocated from CLPR 0,
but you must leave at least 8 GB remaining in CLPR 0.
•
In Cache Residency Size, select the cache capacity. You may select from 4 to 508 GB,
in 2 GB increments. The default value is 4 GB. The size of the cache is allocated from
CLPR0, but you must leave at least 8 GB remaining in CLPR0.
•
In Num of Cache Residency Areas, type the desired capacity for the Cache Residency
area. The range of values is 0 to 16384 and the default value is 0.
7. Click Apply. The progress bar appears. The change in cache capacity is reflected in this cache
logical partition and in the CLPR0.
8. To change the settings of an existing CLPR, repeat steps 5 through 7.
At this point, the CLPR has no parity groups. You can now migrate resources to the new CLPR (see
“Migrating resources to and from a CLPR” (page 10) ).
Migrating resources to and from a CLPR
After adding a CLPR, you must migrate resources (parity groups) from existing CLPRs to the new
CLPR. Before deleting a CLPR, you must first migrate resources from that CLPR to CLPRs that will
not be deleted.
When migrating resources to and from cache logical partitions:
•
You can migrate resources only within the same CU.
•
All interleaved parity groups must be in the same CLPR.
•
LUSE volumes cannot be set across more than one CLPR.
•
If a parity group contains one or more LDEVs that have defined Cache Residency extents, you
cannot migrate that parity group to another CLPR.
To migrate resources to and from a CLPR:
1.
Click Settings > Environmental Setting > Partition Definition on the menu bar of the Remote
Web Console main window.
2. Click to change the mode from View to Modify.
3. Access the Logical Partition window, then select a CLPR from the Partition Definition tree.
4. In the Cache Logical Partition window, click Select CU to choose a CU.
5. Specify how you want to view information the CLPR resource list. In the Select CU dialog box,
choose one of the following:
•
All CUs: Shows the information about all CUs on the CLPR resource list.
•
Choose Specific CU, then specify the LDKC and the CU. This shows only CLPRs from the
selected CU.
•
Unallocated: Shows information about only the CUs unallocated to CLPR on the CLPR
resource list.
10 Creating virtual cache partitions