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Date:      Wed, 26 May 1999 12:55:11 -0400 (EDT)
From:      Garrett Wollman <wollman@khavrinen.lcs.mit.edu>
To:        Chris Dillon <cdillon@wolves.k12.mo.us>
Cc:        Julian Elischer <julian@FreeBSD.org>, cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org
Subject:   Re: cvs commit: src/sys/i386/isa ida.c
Message-ID:  <199905261655.MAA14875@khavrinen.lcs.mit.edu>
In-Reply-To: <Pine.BSF.4.10.9905251902080.59011-100000@mail.wolves.k12.mo.us>
References:  <199905251945.MAA29032@freefall.freebsd.org> <Pine.BSF.4.10.9905251902080.59011-100000@mail.wolves.k12.mo.us>

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<<On Tue, 25 May 1999 19:12:21 -0500 (CDT), Chris Dillon <cdillon@wolves.k12.mo.us> said:

> Is this a driver for a RAID controller or something else?  I'm just
> curious because on the Compaq servers I have there are some disk
> status lights (disk OK/online/failure, etc) on each individual
> hot-swap disk that operate under NT, but not under FreeBSD.  Does this
> driver control that hardware monitoring feature on these servers
> (S.M.A.R.T. I would assume)?

There is a standard for ``SCSI-Attached Fault-Tolerant Enclosures''
(SAF-TE) which is implemented by some vendors.  If an unknown
processor target shows up in your SCSI probe list, that's probably
what you have.  I have several machines with two of them:

pt0 at ahc0 bus 0 target 6 lun 0
pt0: <ESG-SHV SCA HSBP M2 0.14> Fixed Processor SCSI-2 device 
pt0: 3.300MB/s transfers
pt1 at ahc1 bus 0 target 6 lun 0
pt1: <ESG-SHV SCA HSBP M2 0.14> Fixed Processor SCSI-2 device 
pt1: 3.300MB/s transfers

The way you recognize and talk to them is defined in a Microslop Word
document which you can find floating about under the name
`saftespec.zip'.

-GAWollman

--
Garrett A. Wollman   | O Siem / We are all family / O Siem / We're all the same
wollman@lcs.mit.edu  | O Siem / The fires of freedom 
Opinions not those of| Dance in the burning flame
MIT, LCS, CRS, or NSA|                     - Susan Aglukark and Chad Irschick


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