HP LUN Configuration Manager XP Software - Manual (Page 140)

140 HP StorageWorks LUN Configuration Manager XP: user’s guide
FCP Fibre Channel Protocol.
GB Gigabytes.
HBA Host bus adapter.
HP Hewlett-Packard Company.
H/W Hardware.
LD, LDEV Logical device. An LDEV is created when a RAID group is divided into
sections using a selected host emulation mode (for example, OPEN-9 or
OPEN-M). The number of resulting LDEVs depends on the emulation mode.
The term LDEV is often used synonymously with the term volume.
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 will have a size of 4,693 MB.
LUSE Logical Unit Size Expansion, a feature which logically combines LDEVs
so they appear as a larger LDEV. This allows a LUN to be associated with 2
to 36 LDEVs. Essentially, LUSE makes it possible for applications to
access data requiring a large amount of disk space.
LVM Logical Volume Manager.
MB Megabytes.
MPE Maximum physical extent.
OFC Open Fibre Control.
OPEN-x A general term describing any one of the supported OPEN emulation
modes (for example, OPEN-3, OPEN-9, OPEN-L).
Supported emulation modes: OPEN-3/8/9/E/L.