HP 3000 Enterprise Virtual Array - Manual (Page 178)

small computer
system interface
See SCSI .
Snapclone A virtual disk that can be manipulated while the data is being copied. Only an
Active member of a virtual disk family can be snapcloned.
The Snapclone, like a snapshot, reflects the contents of the source virtual disk at
a particular point in time. Unlike the snapshot, the Snapclone is an actual clone
of the source virtual disk and immediately becomes an independent Active
member of its own virtual disk family.
snapshot A temporary virtual disk (Vdisk) that reflects the contents of another virtual disk
at a particular point in time. A snapshot operation is only done on an active
virtual disk. Up to seven snapshots of an active virtual disk can exist at any
point. The active disk and its snapshot constitute a virtual family.
See also active virtual disk , virtual disk copy , and virtual disk family .
SSN Storage System Name. An HP Command View EVA-assigned, unique
20-character name that identifies a specific storage system.
storage carrier See carrier .
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 .
An electro-mechanical device that initiates an action or completes a circuit.
TB Terabyte. A term defining either:
• A data transfer rate.
• A measure of either storage or memory capacity of 1,099,5111,627,776
(2 40 ) bytes.
See also TBps .
TBps Terabytes per second. A data transfer rate of 1,000,000,000,000 (10 12 ) bytes
per second.
TC Termination Code. An Enterprise Storage System controller 8-character
hexadecimal display that defines a problem causing controller operations to halt.
See also IDX and param .
Termination Code See TC .
termination event Occurrences that cause the storage system to cease operation.
terminator Interconnected elements that form the ends of the transmission lines in the
enclosure address bus.
topology An interconnection scheme that allows multiple Fibre Channel ports to
communicate. Point-to-point, arbitrated loop, and ed fabric are all Fibre Channel
topologies.
transceiver The device that converts electrical signals to optical signals at the point where the
fiber cables connect to the FC elements such as hubs, controllers, or adapters.
uninitialized sys-
tem
A state in which the storage system is not ready for use.
See also initialization .
UNRECOVERABLE
Condition
A drive enclosure EMU condition report that occurs when one or more elements
inside the enclosure have failed and have disabled the enclosure. The enclosure
178 Glossary