Listmates, I ran a comparison on an old file server just to check disk performance of the backup machine. I compared it to a new machine and the difference validates Mohr's law: [AMD K62-450 w/2 20G IBM Deskstar 7200 rpm drives] sudo hdparm -tT /dev/sda /dev/sda: Timing cached reads: 72 MB in 2.00 seconds = 35.94 MB/sec Timing buffered disk reads: 26 MB in 3.09 seconds = 8.41 MB/sec [AMD Phenom 9850 w/2 500G Seagates in RAID1] /dev/sda: Timing cached reads: 3504 MB in 2.00 seconds = 1751.75 MB/sec Timing buffered disk reads: 188 MB in 3.02 seconds = 62.33 MB/sec /dev/sdb: Timing cached reads: 3494 MB in 2.00 seconds = 1746.89 MB/sec Timing buffered disk reads: 200 MB in 3.01 seconds = 66.53 MB/sec /dev/dm-0: Timing cached reads: 3432 MB in 2.00 seconds = 1716.32 MB/sec Timing buffered disk reads: 194 MB in 3.02 seconds = 64.27 MB/sec The Software RAID penalty -- virtually non-existent as far as hdparm is concerned. The results are astounding when you think what has happened in just a few years... -- David C. Rankin, J.D., P.E. Rankin Law Firm, PLLC 510 Ochiltree Street Nacogdoches, Texas 75961 Telephone: (936) 715-9333 Facsimile: (936) 715-9339 www.rankinlawfirm.com -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org