HP StorageWorks XP Performance Advisor Software v4.6 User and Troubleshooting Guide (T1789-96094, June 2010)

CHIP Client-Host Interface Processor
CHIP was used on XP arrays before the advent of the XP24000 type arrays.
With the introduction of XP24000, CHIP replaced CHA. However, CHIP appears
in documents written for array types prior to XP24000.
CHP Channel Processor
The CHP are the micro processors (MP)s located on the channel adapter (CHA).
Synonymously used with CHIP.
CLPR Cache Logical Partition. CLPR contains cache and parity groups, and is available
on the XP12000, XP10000, and later generations of XP arrays.
NOTE:
CLPR0 always exists (cannot be deleted) and is a pool area for cache and parity
groups that are not yet assigned to other CLPRs.
CV Command View
Replaced by Command View Advanced Edition.
CV AE Command View Advanced Edition
The HP StorageWorks XP Command View Advanced Edition software replaces
the Command View (CV) software to manage XP disk arrays.
CSV Comma-separated value
CSW Cache Switch PCB
The CSW has a function to connect the CHA or DKA to the Cache. Each of them
is connected to the Cache by the Cache Memory Hierarchical Star Net (C-HSN)
method. Each cluster is provided with two CSWs, and each CSW can connect
four Caches. The CSW uses an arbitration to switch any of the cache paths to
which the CHA or DKA must be connected.
CU Control Unit or Command Unit
The storage space attached to a DKC can be organized by grouping similarly
configured logical devices (LDEVs) with unique control unit images (CUs). CUs
are numbered sequentially. An XP disk array supports a certain number of CUs,
depending on the disk array model. Each CU can manage multiple LDEVs.
Therefore, to uniquely identify a particular LDEV, you need the CU number and
the LDEV number.
DFW DASD Fast Write
A DFW is a function of a storage controller that allows caching of active write
data without exposure of data loss. This is achieved by journaling of the active
write data in NVS.
DKA Disk Adapter
A DKA is a PCB in the XP disk array and manages the data transfer between
the Cache and the physical drives in the backend. It is one of the two PCB types
in the XP disk array that contains the micro processors.
DKC Disk Controller. The DKC is a frame in an XP subsystem and houses the channel
adapters and Service Processor (SVP).
DKP Disk Processor
Glossary376