Date: Mon, 09 Mar 1998 18:43:00 -0800 From: Julian Elischer <julian@whistle.com> To: hackers@FreeBSD.ORG Subject: [Fwd: Re: Synchronous Mirroring for FreeBSD] Message-ID: <3504A8B3.500F9F30@whistle.com>
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Return-Path: <warp9@smtp.northlink.com> Received: (from daemon@localhost) by alpo.whistle.com (8.8.5/8.8.5) id SAA27162 for <julian@alpo.whistle.com>; Mon, 9 Mar 1998 18:26:21 -0800 (PST) Received: from UNKNOWN(), claiming to be "whistle.com" via SMTP by alpo.whistle.com, id smtpd027160; Mon Mar 9 18:26:18 1998 Received: (from smap@localhost) by whistle.com (8.7.5/8.6.12) id SAA24808 for <julian@whistle.com>; Mon, 9 Mar 1998 18:26:17 -0800 (PST) Received: from gatekeeper.whistle.com(207.76.204.2) by whistle.com via smap (V1.3) id sma024806; Mon Mar 9 18:26:13 1998 Received: (from smap@localhost) by gatekeeper.whistle.com (8.7.5/8.6.12) id SAA20178 for <julian@whistle.com>; Mon, 9 Mar 1998 18:26:13 -0800 (PST) Received: from smtp.northlink.com(prescott.northlink.com 209.75.160.32) by gatekeeper via smap (V2.0) id xma020175; Mon, 9 Mar 98 18:25:48 -0800 Received: (from warp9@localhost) by smtp.northlink.com (8.8.6/8.7.3) id TAA22322; Mon, 9 Mar 1998 19:25:47 -0700 (MST) Date: Mon, 9 Mar 1998 19:25:46 -0700 (MST) From: "A.J. Werner" <warp9@northlink.com> To: Julian Elischer <julian@whistle.com> Subject: Re: Synchronous Mirroring for FreeBSD In-Reply-To: <350473BC.7DE14518@whistle.com> Message-ID: <Pine.BSF.3.91.980309192027.21350A-100000@prescott.northlink.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sorry to be so vague. Here is what synchronous mirroring is defined as: "Mirroring maintains a copy of data on physically separate systems connected by a network that supports TCP/IP. The product captures I/O changes in real time as they occur on the primary server, then continuously and automatically send those changes across the network to target servers anywhere in the world. (Ours would be right next to each other) Mirroring is performed at the disk block level, ensuring the continuous protection of both file systems and databases on raw partitions. Open architecture allows the product to be used with any stoarge device, file system and volume manager, allowing organizations to add data protection without changing their existing hardware or software." Again, thanks for any info you have on this! On Mon, 9 Mar 1998, Julian Elischer wrote: > A.J. Werner wrote: > > > > Dear FreeBSD.ORG, > > > > I have searched the Net looking for a program much like Qualix Group's > > DataStar that would allow our servers to have synchronous mirroring. > > Qualix and Digital have been the only two commercially available products > > that I have found to do this, but Qualix's and Digital's product supports > > only HP-UX & AIX, and Digital's version of UNIX as well. I have found some > > products that support Solaris on top of this, but nothing that will support > > FreeBSD. > > Do you know of any product that is available for synchronous mirroring for > > FreeBSD? A major plus would be the cost as well. Qualix's DataStar sells > > for around $20,000 per server pair. Thanks for any help you can give! > > > > Sincerely, > > A.J. Werner > > Northlink Technical Support > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > > with "unsubscribe freebsd-questions" in the body of the message > > If you described what > "synchronous mirroring" is in a better way, > then it would be easier to answer.. > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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