HP XP20000/XP24000 Configuration Manual page 32

LUN Logical unit number. A LUN results from mapping a SCSI logical unit number,
port ID, and LDEV ID to a RAID group. The size of the LUN is determined by the
emulation mode of the LDEV and the number of LDEVs associated with the LUN.
For example, a LUN associated with two OPEN-3 LDEVs has a size of 4,693
MB.
LUSE Logical Unit Size Expansion. The LUSE feature is available when the HP
StorageWorks LUN Manager product is installed, and allows a LUN, normally
associated with only a single LDEV, to be associated with 1 to 36 LDEVs.
Essentially, LUSE makes it possible for applications to access a single large pool
of storage.
OFC Open Fibre Control.
OPEN- x
A general term describing any one of the supported OPEN emulation modes (for
example, OPEN-E. There are two types of OPEN-x devices: legacy OPEN-x
devices with a fixed size (such as, OPEN-3, OPEN-8, OPEN-9, OPEN-E), and
OPEN-V, which has a variable size and is a CVS based volume.
PA Physical address.
path A path is created by associating a port, a target, and a LUN ID with one or more
LDEVs. Also known as a LUN.
port A physical connection that allows data to pass between a host and a disk array.
R-SIM Remote service information message.
SIM Service information message.
SNMP Simple Network Management Protocol. A widely used network monitoring and
control protocol. Data is passed from SNMP agents, which are hardware and/or
software processes reporting activity in each network device (hub, router, bridge,
and so on) to the workstation console used to oversee the network. The agents
return information contained in a MIB (Management Information Base), which
is a data structure that defines what is obtainable from the device and what can
be controlled (turned off, on, and so on).
SVP Service processor. A notebook computer built into the disk array. The SVP
provides a direct interface to the disk array and used only by the HP service
representative.
SVS Storage Virtualization System, an appliance that manages multiple disk array
storage systems.
TID Target ID.
volume On the P9000 or XP array, a volume is a uniquely identified virtual storage
device composed of a control unit (CU) component and a logical device (LDEV)
component separated by a colon. For example 00:00 and 01:00 are two
uniquely identified volumes; one is identified as CU = 00 and LDEV = 00, and
the other as CU = 01 and LDEV = 00; they are two unique separate virtual
storage devices within the array.
VSC Volume size customization. Also known as CVS.
WWN World Wide Name. A unique identifier assigned to a Fibre Channel device.
32 Glossary