Phoenix RPC12 Series, Cli Reference Manual

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Glossary
The glossary defines terms and acronyms used in Phoenix storage system
documentation. Definitions obtained from the Storage Networking Industry
Association (SNIA) Dictionary are indicated with “(SNIA)” at the end. For the
complete SNIA Dictionary, go to
www.snia.org/education/dictionary
.
active-active Synonym for dual active components or controllers. A pair of
components, such as the controllers in a failure tolerant storage
subsystem that share a task or class of tasks when both are functioning
normally. When one of the components fails, the other takes on the
entire task. Dual active controllers are connected to the same set of
storage devices, improving both I/O performance and failure tolerance
compared to a single controller. (SNIA)
address A data structure or logical convention used to identify a unique entity,
such as a particular process or network device.
AL_PA See arbitrated loop physical address (AL_PA) .
ANSI American National Standards Institute.
arbitrated loop
physical address
(AL_PA) An 8-bit value used to identify a participating device in an Arbitrated
Loop. (SNIA)
API Application programming interface.
ARP Address Resolution Protocol.
array See storage system .
block A single sector on a disk. The smallest unit of data that is stored
(written) to or retrieved (read) from a disk.