Path: utzoo!attcan!uunet!vsi!friedl
From: friedl@vsi.UUCP (Stephen J. Friedl)
Newsgroups: comp.databases
Subject: Re: OLTP, New releases of Oracle and Rd
Summary: Disk mirroring in 3Bs
Message-ID: <779@vsi.UUCP>
Date: 6 Aug 88 15:55:14 GMT
References: <376@cullsj.UUCP> <28400002@urbsdc>
Organization: V-Systems, Inc. -- Santa Ana, CA
Lines: 21

In article <28400002@urbsdc>, kworrell@urbsdc.Urbana.Gould.COM writes:
> 
> This brings up an interesting question.  Where should mirrorred
> disks be implemented, in the DBMS or in the OS?
> 
> Gould has implemented mirrored disks in the OS making explicit
> mirroring by the DBMS unnecessary.
> 

AT&T has disk mirroring as well (in the O.S.) on their SCSI
devices; it seems pretty well-supported although we have not
used it yet. 

I get the impression from the docs that mirroring is pretty
easy with SCSI because there is some kind of support for it
in the interface -- anybody know this?

-- 
Steve Friedl    V-Systems, Inc.  +1 714 545 6442    3B2-kind-of-guy
friedl@vsi.com     {backbones}!vsi.com!friedl    attmail!vsi!friedl
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