Glossary - HP XP20000 User Manual

Glossary

ACP
CHA
CHP
CLPR
CU
DASD
DFW
DKA
DKCMAIN
DKP
DRR
ESCON
LD, LDEV
LU
LUN
NVS
P-DEV
P-VOL
SM
SMPL
Array control processor.
Channel adapter. A device that provides the interface between the array and
the external host system. Occasionally, this term is used synonymously with the
term channel host interface processor (CHIP).
Channel processor. The processors located on the CHA. Synonymous with CHIP.
Cache logical partition.
Control unit.
Direct-access storage device.
DASD fast write.
Disk adapter.
See also ACP
Disk controller main.
Disk processor.
Data recovery and reconstruction processor.
Enterprise systems connection An optical interface used to connect the mainframe
to the control unit; a predecessor to FICON.
Logical device. An LDEV is created when a RAID group is carved into pieces
according to the selected host emulation mode (that is, OPEN-3, OPEN-8,
OPEN-9). The number of resulting LDEVs depends on the selected emulation
mode. The term LDEV is also known as term volume.
Logical unit.
Logical unit number.
Nonvolatile storage.
Physical device.
Primary volume.
Shared memory.
Simplex.
XP24000/XP20000 Performance Monitor User Guide 169