HP StorageWorks XP12000 Disk Array owner's guide (AE002-96029, October 2006)

GB Gigabytes.

GLM Gigabyte link module.

HA High availability.

HBA Host bus adapter. A built-in function or a card installed in a

PC or other host compute

r to enable connection of the host to

the SAN.

host mode Each port can be conﬁguredforaparticularhosttype.These

modes are represented as two-digit hexadecimal numbers. For

example, host mode 08 represents an HP-UX host.

hot standby Using two or more servers as a standby in case of a primary

server failure.

HP Hewlett-Packard Development Company.

I/O Input/output (applies to an operation or device).

LAN Local area network.

LD, LDEV Logical device. An LDEV is created when a RAID group is

carved into pieces according t

otheselectedhostemulation

mode (that is, OPEN-3, OPEN-

8, OPEN-9). The number of

resulting LD EVs depends on the selected emulation mode. The

term LDEV is often used synonymously with the term volume.

LED Light emitting diode.

local disk A disk in the host.

LU Logical unit.

LUN Logical unit number . A LUN results from mapping a SCSI

logical unit number, port ID, and LDEV ID to a R A ID group.

The size of the LUN is determined by the emulation mode of

the LDEV, and the number of LD EVs associated with the LUN.

For example, a LUN associated with t wo OPEN-3 LDEVs has a

size of 4,693 MB.

LUSE Logical unit size expansion. See also Expanded LUN.

m Meters.

MB Megabytes.

MCU Main control unit.

Glossary