2010/5/6 Matt Keating <keatster at gmail.com>: > Thanks for all the updates. Will look into iozone and the advice given > about the rest. Either I'm doing/reading something wrong or a 1TB SATA 7200 RPM drive is faster than 4x300GB SCSI 10K RPM drives in raid 10. Both of the results below were from iozone, running the following command: $ iozone -R -l 5 -u 5 -r 4k -s 100m -F /tmp/F1 /tmp/F2 /tmp/F3 /tmp/F4 /tmp/F5 SATA: "Throughput report Y-axis is type of test X-axis is number of processes" "Record size = 4 Kbytes " "Output is in Kbytes/sec" " Initial write " 564135.95 " Rewrite " 2021499.52 " Read " 5937227.44 " Re-read " 5898310.02 " Reverse Read " 5652286.96 " Stride read " 5556376.58 " Random read " 5505582.00 " Mixed workload " 3570796.92 " Random write " 1913500.58 " Pwrite " 580229.98 " Pread " 5310776.62 RAID: "Throughput report Y-axis is type of test X-axis is number of processes" "Record size = 4 Kbytes " "Output is in Kbytes/sec" " Initial write " 253099.59 " Rewrite " 915449.39 " Read " 1911688.05 " Re-read " 1906603.72 " Reverse Read " 1847584.97 " Stride read " 1772254.31 " Random read " 1550438.36 " Mixed workload " 1276847.84 " Random write " 930307.99 " Pwrite " 206193.02 " Pread " 2631370.07 Am I doing something wrong? Please advise. Thanks, Matt