HP 6400.8400 Enterprise Virtual Array - Manual (Page 142)

INFORMATION
condition A drive enclosure EMU condition that may require action. This condition is for information purposes
only and does not indicate the failure of an element.
initialization A configuration step that binds the controllers together and establishes preliminary data structures
on the array. Initialization also sets up the first disk group, called the default disk group, and
makes the array ready for use.
input/output
module See I/O module.
intake temperature See ambient temperature.
interface A set of protocols used between components such as cables, connectors, and signal levels.
J
JBOD Just a Bunch of Disks.
L
laser A device that amplifies light waves and concentrates them in a narrow, very intense beam.
Last Fault View An HSV Controller display defining the last reported fault condition.
Last Termination
Error Array See LTEA.
license key A WWN-encoded sequence that is obtained from the license key fulfillment website.
link A connection of ports on Fibre Channel devices. 1.
2.
A full duplex connection to a fabric or a simplex connection of loop devices.
logon A procedure whereby a user or network connection is identified as being an authorized network
user or participant.
loop See arbitrated loop.
loop ID Seven-bit values numbered contiguous from 0 to 126 decimal that represent the 127 valid AL-PA
values on a loop. (With Fibre Channel, not all 256 hexadecimal values are allowed as AL-PA
values.)
loop pair A Fibre Channel attachment between a controller and physical disk drives. Physical disk drives
connect to controllers through paired Fibre Channel arbitrated loops. There are two loop pairs,
designated loop pair 1 and loop pair 2. Each loop pair consists of two loops (called loop A and
loop B) that operate independently during normal operation, but provide mutual backup in case
one loop fails.
LTEA Last termination event array. A two-digit HSV Controller number that identifies a specific event
that terminated an operation. Valid numbers range from 00 to 31.
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.
M
management
agent The HP P6000 Command View software that controls and monitors the HP Enterprise storage
system. The software can exist on more than one management server in a fabric. Each installation
is a management agent.
management
agent event A significant occurrence to or within the management agent software, or an initialized storage
cell controlled or monitored by the management agent.
mean time
between failures See MTBF.
Mega A notation denoting a multiplier of 1 million (1,000,000).
metadata The data in the first sectors of a disk drive that the system uses to identify virtual disk members.
micro meter See µm.
142 Glossary