Adaptec DuraStor 7220SS User Manual page 157

Glossary
RAID 5 set
A RAID 5 set is an array made up of at least three or more disk
drives. It is similar to a RAID 4 set except that the parity check data
is distributed among all of the disk drives rather than being stored
on a separate disk drive. See also chunk; partition; parity.
RAID 50
See stripe set of RAID 5 sets (RAID 0/5).
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.
release forced reset (unkill)
When a storage system is in active-active mode and a surviving
controller removes the reset from the other controller, it releases it
from a forced reset (also known as unkill). The other controller will
reboot and attempt to come online. See also storage system.
S
SAF-TE
nds for SCSI Accessed Fault-Tolerant Enclosure. The SAF-TE
Sta
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.
SES
Stands for SCSI Enclosure Services. SES enclosures support
management similar to SAF-TE enclosures. SES is a SCSI-3
specification. See also enclosure; SAF-TE.
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.
SCSI channel termination
See termination.
Glossary-9