HP XP20000/XP24000 Configuration Manual page 40

host mode Each port can be configured for a particular host type. These modes are
represented as two-digit hexadecimal numbers. For example, host mode 08
represents an HP-UX host.
LD, LDEV Logical device. An LDEV is created when a RAID group is carved into pieces
according to the selected host emulation mode (that is, OPEN-3, OPEN-8,
OPEN-9). The number of resulting LDEVs depends on the selected emulation
mode. The term LDEV is also known as term volume.
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.
RAID Redundant array of independent disks.
R-SIM Remote service information message.
SCSI Small Computer Systems Interface. A standard, intelligent parallel interface for
attaching peripheral devices to computers, based on a device-independent
protocol.
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).
STMS Sun StorEdge Traffic Manager.
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.
40 Glossary