HP XP Array Manager Software - Manual (Page 35)

Glossary
CU Control unit.
ID Identification.
LD, LDEV 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.
LDKC Logical disk controller.
LUN Logical Unit Number.
LUSE Logical Unit Size Expansion. The LUSE feature is available when the HP
StorageWorks LUN Manager product is installed, and allows a LUN, normally
associated with only a single LDEV, to be associated with 1 to 36 LDEVs.
Essentially, LUSE makes it possible for applications to access a single large pool
of storage.
OPEN- x A general term describing any one of the supported OPEN emulation modes (for
example, OPEN-E. There are two types of OPEN-x devices: legacy OPEN-x
devices with a fixed size (such as, OPEN-3, OPEN-8, OPEN-9, OPEN-E), and
OPEN-V, which has a variable size and is a CVS based volume.
PB Petabyte; equals 1,000^5 bytes (for physical storage such as hard disk drives)
or 1,024 TB or 1,024^5 bytes (for logical storage).
P-VOL Primary volume.
R-SIM Remote service information message.
SLPR Storage logical partition.
S-VOL Secondary or remote volume. The copy volume that receives the data from the
primary volume.
SVP Service processor. A notebook computer built into the disk array. The SVP
provides a direct interface to the disk array and used only by the HP service
representative.
VMA Volume management area.
XP24000/XP20000 Data Retention Utility User Guide 35