Filter
Top Products
A-12
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