XM Satellite Radio AA-RU5HC-TE manual See also disk failure protection

Glossary

snapshot

A temporary virtual disk that reflects the contents of another virtual disk at a particular point in time. A snapshot operation is done only on an active virtual disk. The active disk and its snapshot constitute a virtual disk family.

See also active virtual disk, virtual disk copy, and virtual disk family.

spare policy

This is the disk failure protection level set for the system and disk groups.

See also disk failure protection.

SSN

Storage System Name. A user-defined, unique 20-character name that identifies a specific storage system.

storage pool

The aggregated blocks of available storage in the total physical disk array.

storage system

The controllers, storage devices, enclosures, cables, and power supplies and their software.

Storage System Name

See SSN.

Storage System Scripting Utility (SSSU)

A command-line application supplied in the host operating system kits that lets you configure and control HSV controllers.

switch

An electro-mechanical device that initiates an action or completes a circuit.

system

A controller or controller pair that is treated conceptually as one controller. In the Command View EVA, the system is the name you give the initialized storage system.

TB

Terabyte. A term defining either:

■A data transfer rate. See also TBps.

■A measure of either storage or memory capacity of 1,099,5111,627,776 (240) bytes.

TBps

Terabytes per second. A data transfer rate of 1,000,000,000,000 (1012) bytes per second.

122 Command View EVA Storage System Scripting Utility Reference Guide