3PAR InForm® OS 2.2.4 Concepts Guide (320-200085 Rev B, March 2009)

GL 11
Glossary
InForm OS Version 2.2.4 3PAR InForm OS Concepts Guide
resynch, resynchronize
To copy changes from one volume in a physical
copy pair to the other because that volume was
modified at some point after the physical copy
operation took place. See also physical copy.
rollback
See promote.
row
A grouping of RAID sets. Data is striped across
the rows of RAID 10 and RAID 50 logical disks.
row size
The number of sets in a row. A row is a grouping
of RAID sets. Data is striped across the rows of
RAID 10 and RAID 50 logical disks.
RSCN
See registered state change notification.
S
SCSI reservation/registration
Allows multiple hosts to share a SCSI interface to
access exported volumes. Multiple hosts can have
registrations to a single volume, but only one
host can have the reservation.
safety breaker
The device used to power on and power off the
power distribution unit. The safety breaker also
prevents power surges in the AC line from
damaging a storage server.
second virtual volume backup node
The controller node that takes over for the
virtual volume backup node if the virtual volume
node fails.
secondary path
Connection between a controller node initiator
port and a physical disk that is used when the
primary path is inaccessible (a failure condition).
The primary and secondary paths are not user
configurable and are determined by drive
magazine placement.
selecting
In the InForm Management Console, Selecting
table entries highlights only the table entries
that meet the specified criteria. See also filtering.
service processor
A device inserted into a rack that enables 3PAR
service personnel to locally and remotely
monitor and service 3PAR Storage Servers.
set
See RAID set.
set size
The number of chunklets in a set. Also known as
mirror depth for RAID 1 sets and parity set for
RAID 5 sets.
severity indicator
Icon in the InForm Management Console alert
pane or on the InForm Management Console
status bar that shows the seriousness of an alert.
See also alert pane and status bar.
SFP
See small form-factor pluggable transceiver.
small form-factor pluggable transceiver
Type of high-speed data transceiver used on the
DC2 and DC4 FCALs, E200 node, as well as
LP11002 and FC044X HBAs. mall in size and hot
pluggable, allowing for an individual SFP
connector to be replaced without replacing the
entire DC2 FCAL.
snapshot
A virtual or physical copy of a virtual volume.