From owner-freebsd-hackers Sun Mar 8 20:39:32 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id UAA22735 for freebsd-hackers-outgoing; Sun, 8 Mar 1998 20:39:32 -0800 (PST) (envelope-from owner-freebsd-hackers@FreeBSD.ORG) Received: from allegro.lemis.com (allegro.lemis.com [192.109.197.134]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id UAA22718 for ; Sun, 8 Mar 1998 20:39:20 -0800 (PST) (envelope-from grog@lemis.com) Received: from freebie.lemis.com (freebie.lemis.com [192.109.197.137]) by allegro.lemis.com (8.8.7/8.8.5) with ESMTP id PAA19228; Mon, 9 Mar 1998 15:09:06 +1030 (CST) Received: (from grog@localhost) by freebie.lemis.com (8.8.8/8.8.7) id PAA04926; Mon, 9 Mar 1998 15:09:04 +1030 (CST) (envelope-from grog) Message-ID: <19980309150904.17095@freebie.lemis.com> Date: Mon, 9 Mar 1998 15:09:04 +1030 From: Greg Lehey To: "M. Warner Losh" , Leif Neland Cc: freebsd-hackers@FreeBSD.ORG Subject: Re: SCSI Bus redundancy... References: <4bf_9803042116@swimsuit.swimsuit.roskildebc.dk> <4bf_9803042116@swimsuit.swimsuit.roskildebc.dk> <199803061603.JAA01624@pencil-box.village.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 0.89i In-Reply-To: <199803061603.JAA01624@pencil-box.village.org>; from M. Warner Losh on Fri, Mar 06, 1998 at 09:03:14AM -0700 WWW-Home-Page: http://www.lemis.com/~grog Organization: LEMIS, PO Box 460, Echunga SA 5153, Australia Phone: +61-8-8388-8286 Fax: +61-8-8388-8725 Mobile: +61-41-739-7062 Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Fri, 6 March 1998 at 9:03:14 -0700, M. Warner Losh wrote: > In message <4bf_9803042116@swimsuit.swimsuit.roskildebc.dk> Leif Neland writes: > : A company I know has the production database in one location, and a > : backup database in another. The backup-database operates in > : "incremental restore" mode (for lack of a better word), and receives > : the redo-logs from the production database over a dedicated network > : link. So the backup-database is only a few minutes behind at most. > > The company that I work for is producing a product called DataStar > (what a name) that operates at the disk block level to accomplish the > same thing. We've found that a properly configured system is never > more than about a second behind in its updates. > > Any FreeBSD interest in a disk mirroring product that mirrors data to > a remote location in realtime? I'd love to do a FreeBSD port :-). I think I'd be interested in that. I know of at least one person who's been deperately looking. Greg To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message