Adaptec DuraStor 7220SS User Manual page 129

Glossary
redundancy
The capability of preventing data loss if a disk drive fails. Some
array types give you this capability using one of two methods: two
identical copies or parity.
S
SAF-TE (SCSI Accessed Fault-Tolerant Enclosure)
The SAF-TE specification is an open specification designed to
provide a comprehensive standardized method to monitor and
report status information on the condition of disk drives, power
supplies, cooling systems, and other components used in high-
availability LAN servers and storage subsystems . See also
enclosure.
SAN
Stands for Storage Area Network. SAN is a dedicated network for
storage data traffic that links one or more servers to one or more
storage systems. Each storage system could be RAID, tape backup,
tape library, CD-ROM library, or JBOD.
SES (SCSI Enclosure Services)
SES enclosures support management similar to SAF-TE enclosures.
SES is a SCSI-3 specification. See also enclosure; SAF-TE (SCSI
Accessed Fault-Tolerant Enclosure).
SCSI
Stands for Small Computer System Interface. SCSI is an industry
standard for connecting peripheral devices and their controllers to
an initiator. Storage devices are daisy-chained together and
connected to a host adapter. The host adapter provides a shared
bus that attached peripherals use to pass data to and from the host
system. Examples of devices attached to the adapter include disk
drives, CD-ROM drives, optical disks drives, and tape drives. In
theory, any SCSI device can be plugged into any SCSI controller.
SCSI bus
A SCSI bus provides a means of transferring data between SCSI
devices. A SCSI bus is either an 8- or 16-bit bus that supports up to
8 or 16 devices, including itself. The bus can consist of any mix of
initiators and targets, with the requirement that at least one
initiator and one target must be present.
Glossary-8