HP StorageWorks XP24000 Disk Array Site Preparation Guide, v01 (AE131-96002, June 2007)

mutual hot
standby system
Two servers 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,
a processor, which is an element of a 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 specific physical disk into two or more areas as if 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 HP XP disk array depends on the number of
supported I/O slots and the number of ports available per I/O adapter. The HP
XP family of disk arrays supports Fibre Channel (FC) ports as well as other port
types. Ports are named by port group and port letter, such as CL1-A. CL1 is the
group, and A is the port letter.
P-P Point-to-point.
PS Power supply.
RS Russellstoll, a registered trademark indicating a brand of electrical plugs and
receptacles manufactured by Thomas & Betts Corporation.
RAID Redundant array of independent disks.
RAID group One or two array groups formatted with a common RAID level. RAID1 parity
groups consist of 4 HDDs (2D+2D) or 8 HDDs (4D+4D). RAID5 parity groups
include a parity disk but also consist of 4 HDDs (3D+1P) or 8 HDDs (7D+1P).
All RAID6 array groups are made up of 8 HDDs (6D+2P).
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
RAID1, RAID5 and RAID6. Not all of these RAID levels are supported by all XP
family members. Consult the owner's guide or your HP representative for the
details of which RAID levels are supported by your specific XP disk array.
RAM Random access memory.
Glossary for the HP XP24000 Disk Array70