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

disk recovery and
restore unit (DRR)
The unit responsible for data recovery and restoration in the
event of a cache failure.
disk group The physical d isk locations associated with a parity group.
emulation modes The lo g ical devices (LDEVs) associated with each RAID
group in a disk array are assigned an emulation mode
that makes them o
perate like OPEN system disk drives.
The emula tion mode determines the size of an LDEV.
OPEN-3: 2.46 GB
OPEN-8: 7.38 GB
OPEN-9: 7.42 GB
OPEN-E: 13.56
GB
OPEN-K: Not available on XP arrays
OPEN-L: 36 GB
OPEN-M: Not av
ailable on XP arrays
OPEN-V: User-defined custom size
EPO Emergency power off.
expanded LUN A LUN is normally associated with only a single LDEV. The
LUSE feature available with HP XP disk arrays allows a LUN
to be associated with 1 to 3 6 LDEVs. Essentially, LUSE
makes it possible for applications to access a single large
pool of storage. The LUSE feature is available when the HP
StorageWorks LUN Configuration Manager product is installed.
ExSA Extended serial adapter.
failover Disconnecting a failed unit or path and replacing it with an
alternative unit or path in order to continue functioning.
FC Fibre Channel.
FC-AL Fibre Channel arbitrated loop.
FCP Fibre Channel Protocol.
fence level A level for selecting rejection of a write I/O request from the
host according to the condition of mirroring consistency.
GB Gigabytes.
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.
HP StorageWorks 200 Storage Virtualization System owner’s guide
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