HP StorageWorks XP Remote Web Console Software - Manual (Page 10)

10 XP Disk/Cache Partition for the XP10000/XP12000
Virtual cache memory that the cache logical partition function partitions is referred to as CLPR.
Figure 1 Example of a CLPR
Figure 1 shows how a corporation’s cache memory is partitioned to three virtual cache memories.
Although the Branch A host is inputting and outputting a large amount of data, the Branch B and Branch C
hosts are unaffected because each branch is allocated 40 GB CLPR.
NOTE: When adding cache memories to the local disk array, install them with Standard Cache Access
Model or High Performance Cache Access Model mode. If the local disk array has additional printed
circuit boards (PCBs), you must use High Performance Cache Access Model mode. Contact your HP
account support representative for more information about additional cache memories.
Storage management logical partitions (SLPRs)
A disk array can be shared with multiple organizations and multiple departments within an enterprise.
Therefore, multiple administrators might manage a single disk array. This creates the potential for an
administrator to destroy other organizations’ volumes, and it can complicate and increase the difficulty of
managing the disk array.
Use XP Disk/Cache Partition to allocate all of one disk array’s resources (all ports and CLPRs) to virtual
disk arrays called SLPRs. You can create up to 31 SLPRs in one disk array. Each virtual disk array can be
accessed only by its administrator. This approach eliminates the risk of an administrator destroying other
organizations’ volumes and of data leaks among organizations.
In a non-partitioned environment, a full array is considered one single partition SLPR0. After the disk array
is partitioned, SLPR0 becomes the unpartitioned portion of the disk array. Similarly, CLPR0 contains all