HP SAN Virtualization Services Platform - Manual (Page 367)

Glossary
This glossary defines acronyms and terms used with the SVSP solution.
access path A specific series of physical connections through which a device is recognized
by another device.
active boot set The boot set used to supply system software in a running system. Applies to the
DPM.
See also
boot set .
active path A path that is currently available for use.
See also
passive path , and in use path .
active/active RAID A storage device that presents volumes on multiple ports, and the volumes are
simultaneously active on all ports. See the product release notes.
active/passive
RAID A storage device that presents volumes on multiple ports of multiple storage
controllers, and at any point in time a volume is only active on the ports of one
controller and passive on the ports of the other controllers. Applies to the HP
EVA.
active/standby
RAID One storage device per path is in use and the others are in backup/standby
mode. See the product release notes.
ALUA A SCSI term for asymmetrical logical unit access.
asynchronous
mirroring A mode of data mirroring in which the updates on the mirror site are always
lagging behind the source site.
auxiliary virtual
disk In VSM, either of the following:
• A backup virtual disk created by a migration task that initially resides on the
destination storage pool and switches to the source storage pool when the
task is complete. After task completion, the auxiliary virtual disk contains the
data that the original virtual disk created when the migration group was
created.
• A virtual disk created by mirroring for the VSM agent on a VSM server to
keep track of the state of the sync mirror group that mirrors the setup virtual
disk and its tasks.
back-end LU In VSM, a logical unit (LUN) of storage presented by a storage system (for
example, an EVA).
back-side path A path between the Data Path Module and the physical storage (for example,
an HP EVA).
boot set Either of two selectable locations provided by the Data Path Module for storing
a system software image.
HP StorageWorks SAN Virtualization Services Platform Manager user guide 367