Drive XA480ME10063 480GB hdparm -t /dev/sda Timing buffered disk reads: 1502 MB in 3.00 seconds = 500.12 MB/sec Drive XA480ME10063 480GB hdparm -t /dev/sdb Timing buffered disk reads: 1490 MB in 3.00 seconds = 496.62 MB/sec Drive XA480ME10063 480GB hdparm -t /dev/sdc Timing buffered disk reads: 1538 MB in 3.00 seconds = 512.50 MB/sec Drive XA480ME10063 480GB hdparm -t /dev/sdd Timing buffered disk reads: 1460 MB in 3.00 seconds = 486.61 MB/sec