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From: Joe Greco <jgreco@brasil.moneng.mei.com>
Message-Id: <9504062352.AA14717@brasil.moneng.mei.com>
Subject: Re: large filesystems/multiple disks [RAID]
To: terry@cs.weber.edu (Terry Lambert)
Date: Thu, 6 Apr 1995 18:52:50 -0500 (CDT)
Cc: rgrimes@gndrsh.aac.dev.com, freebsd-hackers@FreeBSD.org
In-Reply-To: <9504062314.AA16204@cs.weber.edu> from "Terry Lambert" at Apr 6, 95 05:14:15 pm
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> How low level is the code?  I haven't had a chance to look at it yet
> myself... if it's SCSI command level, then forget I said anything and
> go for the multiple drives; otherwise, it'd be nice if it were general
> enough to use on anything for which a device could be obtained (ESDI
> or MFM layered above the media correction, etc.).  Pretending to have
> multiple drives on a single drive would be "good practice" for getting
> the code to be as general as possible...

It operates at the driver level, adding a new block and character special
device, and allowing you to give it several other block devices to use.
That should be quite general.  It's certainly not down at the SCSI command 
level.

... JG