<div class="gmail_quote"><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">you can test this yourself with hdparm hdparm -tT /dev/sda hdparm -tT /dev/sdb </blockquote></div> /dev/sda: Timing cached reads: 1284 MB in 2.00 seconds = 642.47 MB/sec Timing buffered disk reads: 184 MB in 3.01 seconds = 61.04 MB/sec douglas@frog:~$ sudo hdparm -tT /dev/sdb /dev/sdb: Timing cached reads: 1870 MB in 2.00 seconds = 935.13 MB/sec Timing buffered disk reads: 258 MB in 3.02 seconds = 85.39 MB/sec douglas@frog:~$ sudo hdparm -tT /dev/sda /dev/sda: Timing cached reads: 1568 MB in 2.00 seconds = 784.56 MB/sec Timing buffered disk reads: 186 MB in 3.02 seconds = 61.60 MB/sec douglas@frog:~$ sudo hdparm -tT /dev/sdb /dev/sdb: Timing cached reads: 1504 MB in 2.00 seconds = 752.03 MB/sec Timing buffered disk reads: 258 MB in 3.02 seconds = 85.31 MB/sec So what should I make of that?? BTW it is a home system. Mostly email, and music running or maybe a movie. When it gets hardcore I am running gimp, digicam, Blender3d and I always have an Apache server running in the background but it only gets about 2 hits a week! -- Douglas E Knapp Amazon Gift Cards; let them choose!! <a href="http://www.amazon.com/gp/product/B001078FFE?ie=UTF8&tag=seattlebujinkand&linkCode=as2&camp=1789&creative=9325&creativeASIN=B001078FFE">http://www.amazon.com/gp/product/B001078FFE?ie=UTF8&tag=seattlebujinkand&linkCode=as2&camp=1789&creative=9325&creativeASIN=B001078FFE</a>