EMC CLARiiON Installation Manual page 96

Glossary
L
logical unit (LUN) A logical unit is one or more disks or parts of disks bound into a
single entity, accessible by logical unit number (LUN). Logical unit is
a SCSI term. This manual generally uses the term LUN. The RAID
types are: RAID 5 (independent access array), RAID 3 (parallel access
array), RAID 1 (mirrored pair), RAID 0 (nonredundant array), RAID
1/0 (mirrored RAID 0), disk (individual disk), or hot spare. The
operating system sees the LUN, which might include more than one
disk, as one contiguous span of disk space.
LUN See logical unit (LUN).
M
memory module See SP memory modules.
mirroring Maintenance of a second (and optionally, via software, a third) copy
of a logical volume image that provides continuous access if an image
becomes inaccessible. The system and user applications continue
running on the good image without interruption. There are two kinds
of mirroring: hardware mirroring, in which the storage system
maintains synchronization of the disk images, and software
mirroring, in which the operating system maintains synchronization.
Mirroring is further explained in the Fibre Channel configuration
planning guide.
Manager A program with a graphical user interface that lets you bind disks
into LUNs on a non-RAID group storage system, create RAID groups
and bind LUNs on them on a RAID group storage system, unbind
LUNs, destroy RAID groups, set storage-system properties, and
ascertain storage-system status. Navisphere Manager lets you do that
for multiple storage systems on multiple servers running Navisphere
Agent. For more information on Navisphere Manager, refer to the
Navisphere Manager manual.
N
Navisphere
See Initialization Utility.
Initialization Utility
Navisphere Server See Server Utility.
Utility
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EMC CLARiiON Server Support Products for Windows Installation Guide