disk mirroring on 386's

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	We are a small var selling systems based on 386 boxes and Xenix.
 We have a need to be able to mirror all disk activity to a second,
identical drive.  We are willing to mark as bad all tracks on the second
drive that are bad on the first, and the other way also.  Is there a
controller card available which will duplicate all writes to a
second drive?  Cost is not a big factor for our customers, although we
do not want to sell them minis.

	Also, are there any versions of *nix available for 386 boxes
which does mirroring?

		Thanks.

Jonathan Bayer
Intelligent Software Products, Inc.
19 Virginia Ave.
Rockville Centre, NY   11570
uunet!ispi!jbayer