[ILUG] Results of software RAID testing last night

[David Murphy]

Quoting <Pine.LNX.4.33.0108101820230.14198-100000 at dunlop.itg.ie>
by Paul Jakma <paulj at alphyra.ie>:

> On Fri, 10 Aug 2001, David Murphy wrote:
> 
> > SCSI-2 has parity, SCSI-3 has a CRC, parity should be enabled by
> > default, but it's always worth checking, especially with
> > second-hand hardware.
> 
> but the parity check is on just the SCSI header - not the data.
> (iirc from another discussion).

I haven't been able to find anything to substantiate that. Do you have
a reference?

> SCSI-3 -> what exactly do you mean... Ultra/Fast20, Ultra2/Fast40 or
> the newest Ultra160?  ("SCSI-3" has suffered a lot of abuse - i've no
> idea what exactly it really is.)
> 
> /IIRC/ Ultra160 (Fast80) was the first with integrity checking of
> data.

Actually, it would have been more correct of me to say it is required
by SPI-3, which falls under the umbrella of SCSI-3. See
http://www.pcguide.com/ref/hdd/if/scsi/std/scsi3.htm

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