HP StorageWorks 4000/6000/8000 Enterprise Virtual Array Updating Product Software Guide XCS 5.031 (5697-5541, December 2005)

Glossary
This glossary defines terms used in this guide or related to this product a nd is not a comprehensive
glossary of computer terms.
active m em ber
of a virtual disk
family
An active member of a virtual disk family is a simulated disk drive created
by the controllers as storage for one or more hosts. An active m ember of a
virtual disk family is accessible by one or more hosts for normal storage. An
active virtual disk member and its s napshot, if one exists, constitute a virtual disk
family. An active member of a virtual disk family is the only necessary member
of a virtual disk family.
HP Comm and
View EVA
The graphical user interface (GUI) through which a user can control and monitor
a storage system. H P Command View EVA can be installed on more than one
storage management appliance in a fabric. Each installation is a m anagement
agent. The client for the agent is a standard Web browser.
controller A hardware/firmwa re device that m anag es communications bet ween host
systems and other d evices. Controllers typically differ by the type of interface to
the host and provide functions beyond those the devices suppor t.
controller event Asignificant occurrence involving any storage system hardware or software
component reported by the co ntroller to HP Command View EVA.
controller pair Two interconnected controller modules which together control a physical disk
array. A controller pair and the disk array together constitute a storage system.
corrective action
code
An HP Command View EVA graphical user interface (GUI) display component
that defines the action required to correct a problem.
CRITICAL Condi-
tion
A disk drive enclosure EMU condition that occurs when one or more disk drive
enclosure elements have failed or are operating outside of their specifications.
The failure of the elem ent makes continue d normal operation of at least some
elements in the enclosure impossible. Some enclosure elements m ay be able
to continue normal operations. Only an UNRECOVERABLE condition has
precedence. This condition has p recedence over NONCRITICAL errors and
INFORMATION condition.
disk drive enclo-
sure
A u nit that holds storage system devices such as disk drives, power supplies,
blowers, I/O m odules, transceivers, or EMUs.
disk drive enclo-
sure event
Asignificant operational occurrence involving a ha rdware or software
component in the disk drive enclosure. The disk drive enclosure EMU reports
these events to the c ontroller for processing.
disk group A physical disk drive set or pool in which a virtual di
sk is created. A disk group
may c ontain all the physical d isk drives in a controller pair array or a subset
of the array.
EIP Event Information Packet. The event information
packet is an HSV element
hexadecimal character display that defines how an event was detected. Also
called the EIP t ype.
element 1. In a disk drive enclosure, a device such as an EMU, power supply, disk,
blower, or I/O m odule. The object can be controlled, interrogated, or
described by the
enclosure services process.
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