3PAR InForm® OS 2.3.1 Concepts Guide (320-200112 Rev B, February 2010)

GL 6
Glossary
InForm OS Version 2.3.1 3PAR InForm OS Concepts Guide
transferring data via the network. See also 3PAR
Remote Copy.
grow
To expand a base volume manually by increasing
the user space, snapshot administration space, or
snapshot data space.
growth increment
The unit of storage by which additional logical
disks are created and allocated to a Common
Provisioning Group (CPG). The growth increment
is used to automatically create and allocate space
on demand as additional resources are required
by the volumes that draw from the logical disk
pool. The default growth increment is fixed at 32
GB, but the minimum growth increment varies
according to the number of controller nodes in
the system (from 8 GB for a two-node system to
32 GB for a four-node system). See Table 9-1 on
page 9.4 for details.
growth limit
User-defined threshold that can be set for
Common Provisioning Groups (CPGs) to cap their
potential size. See also growth warning.
growth warning
User-defined threshold that can be set for
Common Provisioning Groups (CPGs) to alert
users when they reach a certain size. See also
growth limit.
H
host
A set of WWNs of the physical ports on a server.
host-sees VLUN template
A VLUN template that allows a particular host
connected to any port to see a virtual volume as
a specified LUN. See also VLUN template.
host definition
The name of the host plus a list of the WWNs
that make up the host. A host can have a host
definition even though it is not physically
connected to a storage server.
host port
See target port.
host-sees VLUN template
A rule that allows a particular host connected to
any port to see a virtual volume as a specified
LUN.
I
IMP (Initiator Mode Prohibited)
This is a system setting. When IMP is enabled, a
port cannot be set to initiator mode. See also
initiator mode.
independent electrical circuit
An electrical circuit that does not share a circuit
breaker with another electrical circuit.
initiator, initiator port
A port that is connected to a drive cage. Also
known as a disk port because it sends commands
to the physical disks.
initiator mode
The firmware setting for a port that is connected
to a drive cage.
iSCSI adapter
An iSCSI PCI host bus adapter (HBA) located in a
controller node. The iSCSI adapter connects a
controller node to a host.
iSCSI name
A value used to identify iSCSI channel devices on
an arbitrated loop.