HP StorageWorks XP12000 Disk Array owner's guide (AE002-96029, October 2006)

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 memor y.
mirroring consis-
tency
The consistency (usability) of data in a vo lume (for example,
S-VOL).
mm Millimeters.
MR Magnetoresistive.
ms, msec Milliseconds.
mutual ho t
standby system
Two ser vers that are poised to cover for each other if necessary.
NAS Network attached storage.
node Logically speaking, an environment where instances can be
executed. Physically,aprocessor,whichisanelementofa
cluster system.
NVS Nonvolatile storage.
OFC Open Fibre Control.
OLM Optical link module.
OS Operating system.
PA Physical address.
parity group A parity group is a disk configuration in which multiple disks
work together to provide redundancy. Synonymous with “array
group.”
partition Dividing a specificphysicaldiskintotwoormoreareasasif
there are two or more physical disks.
path Paths are created by associating a port, a target, and a LUN
ID with one or more LDEVs.
PCI Power control interface or peripheral component interconnect.
port A physical connection that allows data to pass between a
host and the disk array. The number of ports on an XP disk
array depends on the number of suppor ted I/O slots and the
number of ports available per I/O adapter. The XP family of
disk arrays supports Fibre Channel (FC) ports as well as other
port t ypes. Ports are na med by port group and port letter, such
as CL1-A . CL1 is the group, and A is the port letter.
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