Determining The Number And Size Of Needed Partitions; Creating Cache Partitions; Recommended Individual Clpr Cache Size For External Storage On Open Systems; Recommended Indiv. Clpr Cache Size For Ext. Stor. On Hp Stor. Virt. Sys - HP StorageWorks XP12000 User Manual

Determining the number and size of needed partitions

The minimum cache partition (CLPR) size is 4 GB. Determine the size you need for each CLPR being
used for external storage based on the total capacity of the assigned external volumes.
the recommended cache sizes for external storage CLPRs on open systems.
information for HP storage virtualization systems.
Table 6 Recommended individual CLPR cache size for external storage on open systems
External storage volume capacity assigned to CLPR
Less than 128,000 GB
128,000 GB or more
Table 7 Recommended indiv. CLPR cache size for ext. stor. on HP stor. virt. sys.
External volume
capacity assigned
to CLPR
Less than 1 TB
1 TB <= capacity <
16TB
16 TB <= capacity <
20 TB
20 TB <= capacity <
128 TB
128 TB or more

Creating cache partitions

Ensure the XP Disk/Cache Partition license is installed, you have Administrator authority on the array,
and you are in Modify mode in XP Remote Web Console. For more information about license keys
and user administration procedures, see the HP StorageWorks XP Remote Web Console user guide
for XP12000/XP10000/SVS200.
1. In XP Remote Web Console, click the Install button in the left pane.
2. Click the Partition Definition tab.
3. In the Cache Logical Partition tree, right-click SLPR0 (if you have additional storage partitions
configured, click the storage partition you want the CLPR to be created in), and select Create
CLPR. The new CLPR is added to the tree.
4. Select the new CLPR in the tree, and change the size and other CLPR settings as needed
(Figure 24).
62 Managing cache with external storage
CLPR0 Additional CLPRs
4 GB 4 GB
8 GB 4 GB
12 GB 4 GB
16 GB 4 GB
24 GB 8 GB
Table 6
Table 7 shows the same
Recommended cache size for CLPR
4 GB
8 GB
shows