CAC
Corrective Action Code. An HP Command View EVA GUI display component
that defines the action required to correct a problem.
See also
read cache
,
write cache
, and
mirrored cache
.
cache
High-speed memory that sets aside data as an intermediate data buffer between
a host and the storage media. The purpose of cache is to improve performance.
cache battery
A rechargeable unit mounted within a controller enclosure that supplies back-up
power to the cache module in case of primary power shortage.
cache battery
indicator
An orange light emitting diode (indicator) that illuminates on the controller
operator control panel (OCP) to define the status of the HSV Controller cache
batteries.
1.
2.
An amber status indicator that illuminates on a cache battery. When illumin-
ated, it indicates that one or more cache battery cells have failed and the
battery must be replaced with a new battery.
carrier
A drive-enclosure-compatible assembly containing a disk drive or other storage
devices.
client
A software program that uses the services of another software program. The HP
Command View EVA client is a standard internet browser.
clone
See
Virtual Disk Copy
.
communication
logical unit
number (LUN)
See
console LUN
.
condition report
A three-element code generated by the EMU in the form where e.t. is the element
type (a hexadecimal number), en. is the element number (a decimal number),
and ec is the condition code (a decimal number).
console LUN
A SCSI-3 virtual object that makes a controller pair accessible by the host before
any virtual disks are created.
Also
called a communication LUN.
console LUN ID
The ID that can be assigned when a host operating system requires a unique ID.
The console LUN ID is assigned by the user, usually when the storage system is
initialized.
See also
console LUN
.
controller
A hardware/firmware device that manages communications between host systems
and other devices. Controllers typically differ by the type of interface to the host
and provide functions beyond those the devices support.
controller
enclosure
A unit that holds one or more controllers, power supplies, blowers, cache
batteries, transceivers, and connectors.
controller event
A significant occurrence involving any storage system hardware or software
component reported by the controller to HP Command View EVA.
controller fault
indicator
An amber fault indicator that illuminates on the controller OCP to indicate when
there is an HSV Controller fault.
controller pair
Two interconnected controller modules which together control the disk enclosures
in the storage system.
HP StorageWorks 6400/8400 Enterprise Virtual Array user guide
131
Summary of Contents for 6400/8400
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Page 16: ...About this guide 16 ...
Page 60: ...EVA6400 8400 operation 60 ...
Page 66: ...Customer replaceable units 66 ...
Page 80: ...Error messages 80 ...
