HP XP External Storage Software - Manual (Page 62)

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.
Table 6 shows
the recommended cache sizes for external storage CLPRs on open systems. Table 7 shows the same
information for HP storage virtualization systems.
Table 6 Recommended individual CLPR cache size for external storage on open systems
Recommended cache size for CLPR External storage volume capacity assigned to CLPR
4 GB Less than 128,000 GB
8 GB 128,000 GB or more
Table 7 Recommended indiv. CLPR cache size for ext. stor. on HP stor. virt. sys.
Additional CLPRs CLPR0 External volume
capacity assigned
to CLPR
4 GB 4 GB Less than 1 TB
4 GB 8 GB 1 TB <= capacity <
16TB
4 GB 12 GB 16 TB <= capacity <
20 TB
4 GB 16 GB 20 TB <= capacity <
128 TB
8 GB 24 GB 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 ).
Managing cache with external storage 62