HP 200 HP StorageWorks 200 Storage Virtualization System owner's guide (AE071- - Page 66

Synonymous with CHIP., Therefore, to uniquely identify a particular LDEV requires both

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The benefit of cache memory is that it speeds I/O throughput to the application. The larger the cache size, the greater the amount of data buffering that can occur and the greater throughput to the applications. The SVS200 supports a range of cache memory. In the event of power loss, battery power holds up the contents of cache for up to 36 hours. CE Customer engineer. channel adapter (CHA) The channel adapter (CHA) provides the interface between the disk array and the external host system. Occasionally this term is used synonymously with the term channel host interface processor (CHIP). channel host interface processor (CHIP) Synonymous with the term channel adapter (CHA). channel processor The processors located on the channel adapter (CHA). (CHP) Synonymous with CHIP. command device A volume on the disk array that accepts Continuous Access or Business Copy control operations which are then executed by the disk array. control unit To organize the storage space attached to the DKC, you can group similarly configured logical devices (LDEVs) with unique control unit images (CUs). CUs are numbered sequentially. The 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 requires both the CU number and the LDEV number. CU Control unit. CVS Custom volume size. CVS devices (OPEN-x CVS) are custom volumes configured using array management software to be smaller than normal fixed-size OPEN system volumes. Synonymous with volume size customization (VSC). disk adapter (DKA) Synonymous with the term ACP. disk unit (DKU) Disk array hardware that houses physical disks. disk controller (DKC) Hardware that houses the channel adapters and service processor (SVP). 66 Glossary

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The bene
fi
t of cache memory is that it speeds I/O throughput
to the application. The larger the cache size, the greater
the amount of data buffering that can occur and the greater
throughput to the applications.
The SVS200 supports a range of cache memory. In the event
of power loss, battery power holds up the contents of cache
for up to 36 hours.
CE
Customer engineer.
channel adapter
(CHA)
The channel adapter (CHA) provides the interface between
the disk array and the external host system. Occasionally this
term is used synonymously with the term channel host interface
processor (CHIP).
channel host in-
terface processor
(CHIP)
Synonymous with the term channel adapter (CHA).
channel processor
(CHP)
The processors located on the channel adapter (CHA).
Synonymous with CHIP.
command device
A volume on the disk array that accepts Continuous Access
or Business Copy control operations which are then executed
by the disk array.
control unit
To organize the storage space attached to the DKC, you can
group similarly con
fi
gured logical devices (LDEVs) with unique
control unit images (CUs). CUs are numbered sequentially. The
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 requires both
the CU number and the LDEV number.
CU
Control unit.
CVS
Custom volume size. CVS devices (OPEN-x CVS) are custom
volumes con
fi
gured using array management software to
be smaller than normal
fi
xed-size OPEN system volumes.
Synonymous with volume size customization (VSC).
disk adapter
(DKA)
Synonymous with the term ACP.
disk unit (DKU)
Disk array hardware that houses physical disks.
disk controller
(DKC)
Hardware that houses the channel adapters and service
processor (SVP).
66
Glossary