ubuntu11.10 RAID5

RAID5
/dev/md0:
 Timing cached reads:   1638 MB in  2.00 seconds = 818.65 MB/sec
 Timing buffered disk reads: 560 MB in  3.00 seconds = 186.64 MB/sec

/dev/sda:

 Timing cached reads:   1802 MB in  2.00 seconds = 900.65 MB/sec

 Timing buffered disk reads: 450 MB in  3.00 seconds = 149.79 MB/sec