HP StorageWorks XP Remote Web Console Software - Manual (Page 16)

Table 2 Capacity for the Data in a Hard Disk Drive that is Associated with a CLPR
and the Recommended Cache Capacity
Capacity for the Data in CLPR Recommended Cache Capacity
Less than 720GB 4GB or more
720GB or more 8GB or more
2,900GB or more 12GB or more
8,650GB or more 16GB or more
14,400GB or more 20GB or more
20,160GB or more 24GB or more
128,000GB or more 28GB or more
146,000GB or more 32GB or more
182,000GB or more 40GB or more
218,000GB or more 48GB or more
254,000GB or more 56GB or more
290,000GB or more 64GB or more
326,000GB or more 72GB or more
Note: To calculate the capacity for the data in a hard disk drive that is associated with a CLPR, use
the following formula.
The number of parity groups: the capacity of one disk x 3 x (3D+1P)
The number of parity groups: the capacity of one disk x 6 x (6D+2P)
The number of parity groups: the capacity of one disk x 7 x (7D+1P)
+)The number of parity groups: the capacity of one disk x 2 x (2D+2D)
Note: To add cache memories to the storage system, install the cache memories with the Standard
Cache Access Model mode or the High Performance Cache Access Model mode. If your storage system
has any additional printed circuit boards (PCBs), the cache memories must be installed with the High
Performance Cache Access Model mode. For further information about additional cache memories, call
HP technical support.
• CLPR and LDKC
Parity groups having the LDEVs that belong to the optional LDKC can be allocated to a CLPR.
16 About Disk/Cache Partition Operations