HP 3PAR InForm OS 3.1.1 Concepts Guide

FC-AL Fibre Channel Arbitrated Loop. A fast serial bus interface standard used to connect storage
devices to servers.
Fibre Channel
adapter
A Fibre Channel PCI host bus adapter (HBA) located in a controller node. The Fibre Channel
adapter connects a controller node to a host or to a drive chassis.
fully provisioned
virtual volume
A virtual volume (snapshot) with a set amount of user space and for which snapshot administration
space and snapshot data space draw resources from a Common Provisioning Group (CPG).
Gigabit Ethernet
adapter
A network adapter located in a controller node. The Gigabit Ethernet adapter connects a controller
node to a network in order to transfer data via the network.
grow To increase the size of a virtual volume or CPG.
growth increment The unit of storage space by which the system creates and allocates additional logical disks to
a Common Provisioning Group (CPG) when the volumes in that CPG require additional resources.
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 eight-node system).
growth limit An optional setting that enables you to specify the maximum size to which a CPG can grow.
growth warning An optional setting that enables you to specify the size at which the system alerts you to the
amount of CPG growth.
host A path or set of paths, defined as either WWN or iSCSI names, to one or more ports on a system.
host definition The name of the host and the list of the paths (WWN or iSCSI) assigned to the host, if any. If
you remove all the paths assigned to the host, the host name becomes the host definition.
host-sees VLUN
template
A VLUN template that allows a specified host connected to any port to see a virtual volume as a
specified LUN (logical unit number).
HP 3PAR Recovery
Manager Software
A data-protection solution that provides restore operations for a variety of platforms, such as
Oracle, SQL Server, Exchange, and more.
HP 3PAR Remote
Copy Software
Software that enables you to create and continually update backup remote copies of virtual
volumes and use those copies for disaster recovery, if necessary.
HP 3PAR System
Tuner Software
The utility that enables the system to reallocate space usage in order to take advantage of
additional resources, such as added hardware or updated CPGs. The System Tuner identifies
underused chunklets and overused volumes, and balances the usage.
HP 3PAR Thin
Provisioning
Software
Software that enables you to create a virtual volume that allocates resources from the CPG on
demand and in small increments.
HP 3PAR Virtual
Copy Software
Software that enables you to create virtual copies (aka snapshots) of virtual volumes. To create
a virtual copy, the system uses the copy-on-write technique, which creates an up-to-date snapshot
at the same time as data is written to the host.
HP 3PAR Virtual
Domains Software
Software that enables you to create distinct domains with domain-specific users and objects.
IMP Initiator Mode Prohibited. A system setting that, when enabled, prevents a port from being set to
initiator mode.
independent
electrical circuit
An electrical circuit that does not share a circuit breaker with another electrical circuit.
initiator mode The firmware setting for a Fibre Channel port that is connected to a drive cage.
initiator port A port that is connected to and relays commands to physical disks within a drive cage. Also
known as a disk port.
iSCSI adapter An iSCSI PCI host bus adapter (HBA) located in a controller node. An iSCSI adapter connects a
controller node on an iSCSI port to a host.
iSCSI name The name of an iSCSI path. You use an iSCSI name to identify that iSCSI path to a host.
LD Logical disk. A collection of chunklets that reside on different physical disks and that are arranged
as rows of RAID sets. When you create a CPG, the system creates and groups logical disks and
assigns those logical disks to the CPG.
LIP Loop Initialization Primitive. The protocol by which a Fibre Channel Arbitrated Loop (FC-AL)
network initializes upon power up or recovers after a failure or other unexpected condition.
76 Glossary