HPE XP7 User Manual page 361

management Logical Partition, both mean the same. The purpose of the SLPR is to allow multiple
administrators to manage a subsystem without the risk of causing mistakes that can destroy another
user's volumes, or reduce other user's expected performance by using more components (e.g. cache)
than required.
Storage Subsystem Identification (SSID)
The SSID (also called Subsystem Identifier) is a user assigned number that identifies a DASD
subsystem. This number is set by the service representative at the time of the installation and it is
included in the product data. The Valid SSID values are 0004-FFFC.
V
V-VOL
virtual volume
Virtual volume (V-VOL)
The secondary volume in a Snapshot pair. When in PAIR status, the V-VOL is an up-to-date virtual
copy of the primary volume (P-VOL). When in SPLIT status, the V-VOL points to data in the P-VOL
and to replaced data in the pool, maintaining the point-in-time copy of the P-VOL at the time of the
split operation.
T
Thin Provisioning (ThP, TP)
Thin Provisioning is a volume management feature that is implemented by creating one or more Thin
Provisioning pools (THP pools) of physical storage space using multiple LDEVs. Then, you can
establish virtual THP volumes (THP V-VOLs) and connect them to the individual THP pools. In this
way, capacity to support data can be randomly assigned on demand.
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 HPE 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.
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