Can you spot the IDE drive in the mix
Drive One
/dev/sda:
Timing cached reads: 422 MB in 2.00 seconds = 210.72 MB/sec
Timing buffered disk reads: 220 MB in 3.03 seconds = 72.72 MB/sec
Drive Two
/dev/sdb:
Timing cached reads: 412 MB in 2.00 seconds = 205.55 MB/sec
Timing buffered disk reads: 224 MB in 3.01 seconds = 74.37 MB/sec
Drive Three
/dev/sdc:
Timing cached reads: 420 MB in 2.00 seconds = 209.78 MB/sec
Timing buffered disk reads: 240 MB in 3.01 seconds = 79.66 MB/sec
Drive Four
/dev/sdd:
Timing cached reads: 442 MB in 2.00 seconds = 220.48 MB/sec
Timing buffered disk reads: 76 MB in 3.06 seconds = 24.81 MB/sec