HP XP Performance Advisor Software - Manual (Page 410)

T
Thin Provisioning
(ThP, TP) Using
the thin provisioning, you can operate with a global pool of LDEVs that are not assigned
to
a physical storage. The XP and the XP7 disk arrays add virtual capacity from the pool of
LDEVs
as and when the data is written, and only at that time is the physical capacity assigned to
the
LDEVs and used for storage purpose.
Tiered Storage
Manager (TSM) Tiered Storage Manager Software is used to perform migration, where data stored on one volume
is moved to another volume in the disk arrays. Tiered Storage Manager moves data that resides
on predefined set of volumes to another set of volumes with the same characteristics. For more
information, see the manuals set provided for Tiered Storage Manager on the HP Manuals page.
Track Track is defined as the slot used by the LDEVs. The slot size for the different emulations is as
follows:
•
Open-V emulation
For XP1024 arrays: 64 KB slot size
◦
◦
For XP12K or XP24K or P9500 arrays: 256 KB slot size
•
Other emulations like the Open-X : 48 KB slot size
trap A type of SNMP message used to signal that an event has occurred. (SNIA)
W
World Wide Name
(WWN) Group The world wide name group provides access for every host in the specified WWN group to a
specified logical unit or group of units. This is part of the LUN Security feature.
WWN World Wide Name. A unique identifier assigned to a Fibre Channel device.
410 Glossary