Drive China SSD 256GB hdparm -t /dev/sda Timing buffered disk reads: 1438 MB in 3.00 seconds = 479.16 MB/sec Drive WDC WD10JPCX-24U 1TB hdparm -t /dev/sdb Timing buffered disk reads: 90 MB in 3.00 seconds = 29.97 MB/sec