HP Workstation xw8000 - Manual (Page 122)

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Glossary
SCSI
Small Computer System Interface. High-speed parallel
communication scheme permitting data transfer rates of up to 320
MB/sec using the Ultra320 specification. The current specification
supports up to 15 devices per channel. See also
ATA .
SCSI device ID
Or SCSI ID. Number assigned to each SCSI device attached to a
SCSI channel . Also known as target ID.
second-level array
Logical device (lower array in a dual-level array) that is never
visible to the operating system and can be used only by other
logical devices. For example, a RAID 1 that is a member of a RAID
10 is a second-level array. Contrast with
visible array and top-level
array .
segment
Reserved area on a physical disk that is a by-product of array
creation or
failover operation. That is, when the software creates an
array, it automatically converts the user-specified available space
into segments. A segment is always part of a logical device and
cannot be used by more than one logical device at a time.
serial ATA
A successor to ATA that transfers data across a serial interface,
instead of a parallel one.
simple volume
Single segment of a drive’s available space.
single-level array
Array created from one or more segments. See also volume , RAID 0 ,
RAID 1 , RAID 5 .
S.M.A.R.T.
Self-Monitoring Analysis and Reporting Technology. This
technology is a drive feature designed to determine the reliability
status of a disk. If S.M.A.R.T. senses that a potential problem is
imminent, the user may be notified and advised of the appropriate
action.
UG.book Page 12 Saturday, October 26, 2002 12:08 PM