User Guide

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multi-initiator
configuration A supported array configuration that connects two hosts to one or more array
administrative domains through hub or switch connections.
P
parity Additional information stored with data on a disk that enables the controller to
rebuild data after a drive failure.
partner group A pair of interconnected controller units. Expansion units interconnected to the
pair of controller units can also be part of the partner group.
power and cooling unit
(PCU) A FRU component in the Sun StorEdge T3 and T3+ array. It contains a power
supply, cooling fans, and an integrated UPS battery. There are two power and
cooling units in a Sun StorEdge T3 and T3+ array.
pSOS An operating system built into the Sun StorEdge T3 and T3+ array RAID
Controller firmware, which provides interfaces between the mounted RAID
volumes and the database environment.
Q
quiesce To halt all drive activity.
R
read caching Data for future retrieval, to reduce disk I/O as much as possible.
redundant array of
independent disks
(RAID) A configuration in which multiple drives are combined into a single virtual
drive to improve performance and reliability.
reliability, availability,
serviceability (RAS) A term to describe product features that include high availability, easily
serviced components, and very dependable.