HP StorageWorks XP24000 Disk Array Site Preparation Guide, v01 (AE131-96002, June 2007)

FICON IBM mainframe Fiber Optic Connection.
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
computer to enable connection of the host to the SAN.
host mode Each port can be configured for a particular host type. 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 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 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 RAID group. The size of the LUN is determined by the
emulation mode of the LDEV, and the number of LDEVs associated with the LUN.
For example, a LUN associated with two 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.
MIX A circuit board in the disk control unit that includes disk adapters and channel
adapters for interfacing disk drives and the host to cache memory.
mirroring
consistency
The consistency (usability) of data in a volume (for example, S-VOL).
mm Millimeters.
MR Magnetoresistive.
ms, msec Milliseconds.
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