On Monday 23 Aug 2010 18:27:59 Carl Wilhelm Soderstrom wrote: > On 08/23 05:04 , Tyler J. Wagner wrote: > > What was your disk configuration? Any RAID involved? > > It was RAIDed, don't remember the details. Possibly RAID 5 (yes, I know, > poor performance -- but low price, and acceptably fast for most needs).
If so, that was most likely your problem. RAID-5 has a write performance of 1X disk speed. RAID-10 has a write performance of 1/2*n disk speed. So if you have 4 disks, you can write almost twice as fast as you could with RAID-1, -5, or no RAID at all. That's a big issue when it comes to simultaneous writes, such as would be caused by running backups while keeping an LVM snapshot. I traded an older array of 5x 500 GB disks in RAID-5 for 4x 1TB disks in RAID-10, and it was worth every penny. Regards, Tyler -- "A competent and self-confident person is incapable of jealousy in anything. Jealousy is invariably a symptom of neurotic insecurity." -- Lazarus Long, "Time Enough for Love", by Robert A. Heinlein ------------------------------------------------------------------------------ Sell apps to millions through the Intel(R) Atom(Tm) Developer Program Be part of this innovative community and reach millions of netbook users worldwide. Take advantage of special opportunities to increase revenue and speed time-to-market. Join now, and jumpstart your future. http://p.sf.net/sfu/intel-atom-d2d _______________________________________________ BackupPC-users mailing list BackupPC-users@lists.sourceforge.net List: https://lists.sourceforge.net/lists/listinfo/backuppc-users Wiki: http://backuppc.wiki.sourceforge.net Project: http://backuppc.sourceforge.net/