We had a triple mirror setup on our production box to do almost what you are describing. We wouldn't do reverse sync, but we had a triple mirror throughout the day and then broke off one of the devices at night with mdctl (now mdadm) and backed it up. After the backup we resynced and again had a triple mirror. I don't see a problem with the reverse sync, but you would have to script something like that. No fancy GUI stuff or scripts pre-made like EMC. Regards, Andy. Andrew Rechenberg Infrastructure Team, Sherman Financial Group arechenberg (at) shermanfinancialgroup.com -----Original Message----- From: Buechler, Mark R [mailto:Mark_R_Buechler@bausch.com] Sent: Wednesday, June 19, 2002 8:40 AM To: 'linux-raid@vger.kernel.org' Subject: RAID1, backup & BCV I was wondering if Linux RAID had anything like what EMC corporation calls a BCV (Business Continuity Volume). A BCV is simply a second or third mirror which is synced up with the main devices and then broken off and kept as a backup. You can then at any point restore from the BCV mirror by doing a reverse sync from it to the main devices. This is a very handy thing when it comes to shared disk. You can sync a mirror on one system, break it and mount it up on another to back it up and all without having to stop any applications on the primary server or put any excessive load on it. I was wondering if there were plans for this sort of functionality or if anyone has given it any thought. - Mark. EMAIL DISCLAIMER Please Note: The information contained in this message may be privileged and confidential, protected from disclosure, and/or intended only for the use of the individual or entity named above. If the reader of this message is not the intended recipient, or an employee or agent responsible for delivering this message to the intended recipient, you are hereby notified that any disclosure, distribution, copying or other dissemination of this communication is strictly prohibited. If you received this communication in error, please immediately reply to the sender, delete the message and destroy all copies of it. Thank You - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
