HP StorageWorks HSG80 ACS Solution Software V8.8 for IBM AIX Installation and Configuration Guide (AA-RV1HA-TE, March 2005)

Glossary
253HSG80 ACS Solution Software V8.8 for IBM AIX Installation and Configuration Guide
StorageWorks A family of modular data storage products that allow customers to
design and configure their own storage subsystems. Components
include power, packaging, cabling, devices, controllers, and software.
Customers can integrate devices and array controllers in HP
StorageWorks enclosures to form storage subsystems.
HP StorageWorks systems include integrated SBBs and array
controllers to form storage subsystems. System-level enclosures to
house the shelves and standard mounting devices for SBBs are also
included.
stripe The data divided into blocks and written across two or more member
disks in an array.
striped mirrorset See RAID level 0+1.
stripeset See RAID level 0.
stripe size The stripe capacity as determined by n–1 times the chunksize, where n
is the number of RAIDset members.
striping The technique used to divide data into segments, also called chunks.
The segments are striped, or distributed, across members of the
stripeset. This technique helps to distribute hot spots across the array of
physical devices to prevent hot spots and hot disks.
Each stripeset member receives an equal share of the I/O request load,
improving performance.
surviving
controller
The controller in a dual-redundant configuration pair that serves its
companion devices when the companion controller fails.
switch A method that controls the flow of functions and operations in
software.
synchronous Pertaining to a method of data transmission which allows each event to
operate in relation to a timing signal. See also asynchronous.
tape A storage device supporting sequential access to variable sized data
records.
target (1) A SCSI device that performs an operation requested by an initiator.
(2) Designates the target identification (ID) number of the device.
target ID
number
The address a bus initiator uses to connect with a bus target. Each bus
target is assigned a unique target address.
this controller The controller that is serving your current CLI session through a local
or remote terminal. See also other controller.