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

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Glossary
InForm OS Version 2.2.4 3PAR InForm OS Concepts Guide
a particular host on a particular port. See also
export, VLUN, and VLUN template.
magazine, mag
See drive magazine.
maintenance PC
A laptop computer running Windows 2000 used
by a field technician to initiate direct
communication with the storage server service
processor and controller nodes.
mapped, mapping
The correspondence of one element in the
system to another element.
master node
See virtual volume master node.
matched-set VLUN template
A rule that allows a particular host connected to
a particular port to see a virtual volume as a
specified LUN. See also VLUN template.
message code
A keycode that identifies a system alert.
midplane
See storage server backplane.
mirror
One member of a group of mirrored chunklets,
which is also known as a RAID 1 set.
mirror depth
See set size.
mirroring
A data redundancy technique used by some RAID
levels and in particular RAID 1 to provide data
protection on a storage array.
N
navigation tree
The navigation tree appears in a pane that
occupies the left side of the InForm Management
Console main window. Each system and system
object appears as an icon in the navigation tree.
no stale snapshots
Virtual copy policy that prevents changes being
written to a base volume when it does not have
enough snapshot data or administration space to
prevent virtual copies from becoming invalid, or
stale, as a result. See also stale snapshots, virtual
copy policy.
node
See controller node.
node cabinet
A cabinet that houses the storage server
backplane and controller nodes.
node chassis
See controller node chassis.
O
original parent base volume
The original base volume from which a series of
virtual and/or physical copies has been created.
Any volume can be the parent from which one or
more virtual copies is created, but for each set of
related copies there is only one original parent
base volume.
owner, owner node
See logical disk owner node.