Posts Tagged ‘SAF-TE’

Example SAF-TE Report

December 30th, 2008 No comments

Below is a  dump from a DotHill SAF-TE compliant enclosure, using SANtools smartmon-ux software. The text in RED indicates the SAF-TE components.  This was run on a Windows-based O/S, but the software is ported to Solaris, LINUX, IRIX, AIX, HP-UX, and other UNIX Variants.

smartmon-ux -I+ -E+ \\.\SCSI3:
SMARTMon-ux [Release 1.13, Build 4-SEP-2002] - Copyright 2002 SANtools, Inc.
Discovered CNSi JSS122 S/N " " on \\.\SCSI3: (processor) [SAF-TE] [Adapter/ID.LUN=0/0.6]
Inquiry Text Page Data - ANSI defined fields
  Device Type:                         processor
  Peripheral Qualifier:                Connected to this LUN
  Removable Device:                    NO
  ANSI Version:                        3 (SPC ANSI X3.301:1997)
  ISO/IEC Version:                     0
  ECMA Version:                        0
  Vendor Identification:               CNSi  
  Product Identification:              JSS122        
  Firmware Revision:                   L421

SAF-TE Specification

December 30th, 2008 No comments

SAF-TE: SCSI accessed fault-tolerant enclosures interface specification

(Editor’s note: Below from Intel’s SAF-TE site)

This specification defines a set of SCSI commands for setting drive status information, including status for RAID arrays, into a (SAF-TE compliant) disk drive array enclosure. The drive array enclosure may be a separate enclosure, or the same enclosure. The specification also defines commands for managing hot-swap drive slots and returning environmental health information for a drive enclosure.

The status commands are typically used by the enclosure manufacturer to assert lights or other indicators Read more…

Are there any industry standards for managing intelligent enclosures

December 30th, 2008 No comments

Yes – SES, which stands for SCSI ENCLOSURE SERVICES, is the ANSI standard by which Fibre Channel-attached subsystems adhere to.  SCSI enclosures “speak” SAF-TE, which stands for SCSI Accessed Fault Tolerant Enclosures.

The SES specification has a great deal of intelligence, which allows for not only reporting health, but changing fan speeds, manipulating the LEDs, and controlling audible alarms.   SAF-TE is a rather dumb interface that reports the most basic information in more of a pass/fail form.