My opinion is to stripe all your data over as many drives as possible. Regarding mirroring, I would suggest a third mirror.
The third mirror can be broken anytime during the day and used for backup, then 're-sync'd.' This configuration provides for minimum data loss due to (the number one cause of data loss) disk failure. Drives are cheap. Mirror up! Sincerely, David Laansma IT Manager Hubbard Supply Co. Direct: 810-342-7143 Office: 810-234-8681 Fax: 810-234-6142 www.hubbardsupply.com "Delivering Products, Services and Innovative Solutions" -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of George Gallen Sent: Wednesday, April 28, 2010 12:47 PM To: U2 Users List Subject: [U2] Universe and stripped drives We are in the process of upgrading our system. When we setup our current system, it was suggested we strip our data drives (5) into one, instead of having 5 separate drives, so it could pull more data at once. The new system will have 6 drives available for striping We were going to have 6 drives striped into one, which would be partitioned into our data areas the thought being it would be faster disk access if it's pulling from all 6 drives at once. BUT...all of the partitions are on that one striped drive. Would it be better to have (2) sets of 3 drives striped into one, and setup the two most used accounts on each of those drives, so now it's only pulling data from 3 drives, but there could be less competition between the two accounts, since they are pulling from separate drives? Anyone played with this at all? FYI, each drive is mirrored as well, so if there is a drive failure, data loss is protected, if there was a drive failure on both the main and mirror (same drive) then with the 6 drive strip, we stand to potentially lose more data, than if there were 2 sets of 3 striped. But...since we have full daily backups, and potentially, considering a second backup during the day, the amount of data loss would be minimal....so I'm putting that off the table for now in determining whether to go with a 3 or 6 stripe. George Gallen Senior Programmer/Analyst Accounting/Data Division, EDI Administrator [email protected] ph:856.848.9005 Ext 220 The Wyanoke Group http://www.wyanokegroup.com _______________________________________________ U2-Users mailing list [email protected] http://listserver.u2ug.org/mailman/listinfo/u2-users _______________________________________________ U2-Users mailing list [email protected] http://listserver.u2ug.org/mailman/listinfo/u2-users
