HP 3PAR InForm OS 3.1.1 Concepts Guide

snapshot A virtual or physical copy of a virtual volume.
snapshot
administration
space
The space on a virtual volume that is used to track changes to the data from the time that a
snapshot of a virtual volume was created.
source volume The virtual volume from which a copy is made.
spare chunklet A chunklet that is reserved for use in case of a failure in the system. A certain number of chunklets
are reserved for use as spares during the system setup and installation process; however, the
system may temporarily set aside additional spares even though these chunklets are not
permanently designated for use as spares.
spare status Indicates whether a chunklet is reserved as a spare or has been selected by the system for use
in sparing on a temporary basis.
sparing The automatic relocation of chunklets on a physical disk when a logging logical disk becomes
full.
stale data Snapshot data that is no longer valid because the base volume does not have enough snapshot
administration or snapshot data space to record new changes to the base volume.
stale snapshot A snapshot that does not track the most recent changes to its base volume. The No Stale Snapshots
virtual copy policy halts writing data to the base volume in order to prevent loss of synchronization
between the volume and any snapshots.
started virtual
volume
A virtual volume that either passed auto-check upon system startup or was created since the system
was last restarted. Started virtual volumes are ready for read/write operations.
status bar The bar at the bottom of the HP 3PAR Management Console main window that contains messages
and icons. Status bar messages and icons can provide vital information about system status,
including the severity level of the most serious new alert in the alert pane.
step size The number of contiguous bytes that the system accesses before moving to the next chunklet.
stopped virtual
volume
A virtual volume that has not been started and is therefore not ready for read/write operations.
system backplane An electronic circuit board that contains sockets into which power supplies and controller nodes
are plugged.
system box Feature on the HP 3PAR Management Console main window toolbar that enables you to move
quickly between systems.
system manager Software component that negotiates between the system and the user interfaces such as the HP
3PAR Management Console and HP 3PAR OS CLI.
system view pane Area in the upper right corner of the HP 3PAR Management Console main window that displays
information about systems and system objects as you select the corresponding icons in the
navigation tree.
target mode The firmware setting for a port that is connected to a host.
target port The port that is connected to and receives commands from a host computer. Also known as a
host port.
TOC Table of Contents. The space on a physical disk that contains the internal description of the system.
The TOCs on all physical disks in the system contain the same information.
TPVV Thinly-Provisioned Virtual Volume. A virtual volume that maps to logical disk space associated
with a Common Provisioning Group (CPG) and is therefore capable of growing on demand.
TSIH Target Session Identifying Handle. An identifier, assigned by the iSCSI target, for a session with
a specific named initiator.
unspecified
property
When using the HP 3PAR Management Console, a property that has been included in a template
but does not have a defined value. When applying the template, the system will either use the
default value (when applicable) or calculate the optimized setting for you.
user data For standard base volumes, the data that is written to the user space.
user size The amount of user space in a virtual volume, or the size of the volume as presented to the host.
user space The space on a virtual volume that represents the size of the virtual volume as presented to the
host. For standard base volumes, the user space holds all user data. For Thinly-Provisioned Virtual
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