HP StorageWorks 200 Storage Virtualization System owner's guide (AE071-96004, October 2006)

host mode Each host port in the SVS200 can be configured for a
particular host t ype. 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 R AID group is
divided into sections according to the selected host emulation
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 RAID g roup.
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 uni
t.
MIX A circuit board in the control unit that includes disk adapters
and channel adapters for interfacing disk arrays and the host
to cache memory.
mirroring consis-
tency
The consistency (usability) of data in a volume (for example,
S-VOL).
mm Millimeters.
MR Magnetoresistive.
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Glossary