How many disks are in your array and are they all raid 0? What kind of controller (if hardware) are you using that is doing a Raid 0+1+1??
Kevin Gusler Applications Developer Mortgage Builder Software, Inc. Main: 800.850.8060 ext. 106 Fax: 248.304.0601 www.mortgagebuilder.com -----Original Message----- From: u2-users-boun...@listserver.u2ug.org [mailto:u2-users-boun...@listserver.u2ug.org] On Behalf Of Steve Romanow Sent: Tuesday, June 23, 2009 2:04 PM To: U2 Users List Subject: Re: [U2] FW: Valid Backup on Windows Universe Kevin Gusler wrote: > All - > > > > We are attempting to enact IBM's double mirrored striped set backup > alternative. > > > > This is where your server has a RAID array of 0+1 and then a second Raid 1 > that is mirrored to the first mirror. > > The process as IBM describes it is: > > > > 1. Quiesce the database (pause all writes, data can still be read, no > loss of data) > > 2. Split off the second set of mirrored drives > > 3. Restart the database > > 4. Backup system using split off hard-drives > > 5. Rejoin the mirrors > > > > Has anyone used this scenario in a windows environment? > > > > Wondering what types of RAID systems people are using? > > - (3) Arrays all of which are Raid 0 and in the OS you mirror those > RAID 0's > > - A Raid 0+1 Array and another Raid 0+1 and then in the OS mirror the > 2 Arrays > > - (3) Arrays Raid 0+1 and in the OS you mirror the 3 arrays > > > > Were there any drawbacks to this scenario? > > > > > > Any scenarios that works better? > > We use this scenario with aix. Should work ok with windows. As long as you are using HARDWARE raid, I think it is safe. I wouldn't trust software raid to this task. _______________________________________________ U2-Users mailing list U2-Users@listserver.u2ug.org http://listserver.u2ug.org/mailman/listinfo/u2-users _______________________________________________ U2-Users mailing list U2-Users@listserver.u2ug.org http://listserver.u2ug.org/mailman/listinfo/u2-users
