SAF-TE

SAF-TE

In computer storage, a SCSI Accessed Fault-Tolerant Enclosure is an industry standard to interface an enclosure to a (parallel) SCSI subystem to gain access to information or control concerning
* temperature
* fan status
* slot status (populated/empty)
* door status
* power supplies
* alarms
* indicators (e.g. LEDs, LCDs)Practically, any given SAF-TE device will only support part of all possible sensors or controls.

Many RAID controllers can utilize a SAF-TE 'activated' backplane by detecting a swapped drive (after a defect) and automatically starting a rebuild. A passive subsystem usually requires a manual rescan and rebuild.

A SAF-TE device is represented as a SCSI processor device. For SAS or Fibre Channel systems, SAF-TE is replaced by the more standardized SCSI Enclosure Services.

The most widely used version was defined in 'SAF-TE Interface Specification Intermediate Review R041497April 14, 1997' by nStor (now Xyratex) and Intel.

External links / References

* [http://www.safte.org www.safte.org]
* [http://www.intel.com/design/servers/ipmi/saf-te.htm SAF-TE as part of Intel's IPMI]
* [http://www.intel.com/design/servers/ipmi/pdf/SR041497.pdf SAF-TE Intermediate Review R041497 (www.intel.com)]

See Also

* SGPIO - Serial General Purpose Input/Output
* SCSI Enclosure Services


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