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From: cgn@ast.COM (Chris Nieves)
Newsgroups: comp.periphs.scsi
Subject: Re: RAID in hardware?
Message-ID: <3229@legs.UUCP>
Date: 20 Feb 91 22:06:24 GMT
References: <540@zds-ux.UUCP>
Organization: AST Research Inc., Irvine, CA
Lines: 23

In article <540@zds-ux.UUCP>, bjstaff@zds-ux.UUCP (Brad Staff) writes:
> Is anybody working on implementing RAID algorithms in hardware?  I'd
> envision something like a SCSI-2 target controller, which controls N
> IDE/ESDI/SCSI/? disks.  Or maybe something completely different?
> -- 

It doesn't make a whole lot of sense to have your cpu reading data,
XORing it, and writing the parity to memory, BEFORE you even start
the disk request.  It seems best to have a SCSI (IDE?) controller
handling all of the parity generation and data correction.  This way
the OS would need to have very little knowledge that there is anything
special out there other than a real big, fast disk.

=======================================================================
Chris Nieves
AST Research
Irvine, CA
(714) 727-8494

I'm new around here so you'll have to get my net address from the
posting.

Anyone thought about starting a new group: comp.periphs.raid???