HP StorageWorks XP20000 Disk Array Site Preparation Guide (AE190-96002, September 2007)

PA Physical add ress.
parity group A parity group is a disk configuration in which multiple disks work tog ether to
provide redundancy. Synonymous with “array group.”
partition Dividing a speci ficphysicaldiskinto two or more areasasifthere aretwo
or
more physical disks.
path Paths are created by associating a port, a target, an
daLUN ID with oneor
more LDEVs.
PCI Power control interface or peripheral component interconnect.
port A physical connection that allows data to pass between a h ost and the disk
array. The number of ports on an XP disk array depends on the number of
supported I/O slots and the number of p orts available per I/O adapter. The
XP
family of disk arrays supports Fibre Channel (FC) por ts as well as other
port types. Ports are named by port group and port letter, such as CL1-A. CL
1
is the group, and A is the port letter.
P-P Point-to-point.
primary rack The XP20000 rack that contains the basic disk array components, including the
controller and up to two disk chassis (up to 120 drives).
PS Power supply.
RS Russellstoll®, a brand of electrical plugs and receptacles manufactured by
Thomas & Betts Corporation.
RAID Redundant array of independent disks.
RAID group See “array group.”
RAID level A RAID Level is one of the ways that disk drives are grouped together to improve
performance, data availability/reliability or both. RAID levels are defined from
RAID0 to RAID6. HP StorageWorks Disk Arrays in the XP product family support
RAID 1 , RAID5 and RAID6. Not all of these RAID levels a re supported by all XP
family members. Consult the owner’s guide or your H P representative for the
details of which RAID levels are supported by your specificXP diskarray.
RAM Random access memory.
RM HP StorageWorks RAID Manager XP, a command line interface for mana ging
XP
arrays.
R-SIM Remote service information message.
R/W, r/w Read/write.
script file A file containing a shell script.
SCSI Small computer system interface.
second rack The optional second XP20000 disk array rack that contains up to two additional
optional disk chassis (up to 120 drives).
shell script A comma nd sequenc e executed by a UNIX shell.
sidefile An area of cache used to store the data sequence number, record location,
record length, and queued control information.
SIM Service information message.
SMI-S Storage Management Initiative Specification.
SMS System managed storage.
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Glossary