Определение скорости диска

# fdisk -l
root@i7:/var/lib/lxc# hdparm -Tt /dev/sda
/dev/sda:
 Timing cached reads:   30840 MB in  2.00 seconds = 15441.73 MB/sec
 Timing buffered disk reads: 1546 MB in  3.00 seconds = 515.17 MB/sec

root@i7:/var/lib/lxc# hdparm -Tt /dev/sdb
/dev/sdb:
 Timing cached reads:   30218 MB in  2.00 seconds = 15130.42 MB/sec
 Timing buffered disk reads: 660 MB in  3.00 seconds = 219.64 MB/sec

root@i7:/var/lib/lxc# hdparm -Tt /dev/sdc
/dev/sdc:
 Timing cached reads:   29756 MB in  2.00 seconds = 14898.85 MB/sec
 Timing buffered disk reads: 358 MB in  3.02 seconds = 118.71 MB/sec
root@i7:/var/lib/lxc#

hdparm -Tt /dev/md0

# /dev/md0:
 Timing cached reads:   31102 MB in  2.00 seconds = 15572.57 MB/sec
 Timing buffered disk reads: 3184 MB in  3.00 seconds = 1061.11 MB/sec
root@i7:~#