On Thu, Aug 11, 2011 at 10:12 AM, Grant <emailgr...@gmail.com> wrote: > I'm testing this USB 3.0 bus-powered hard drive: > > http://www.amazon.com/gp/product/B0041OSQ9S > > and I get: > > # hdparm -tT /dev/sdb > /dev/sdb: > Timing cached reads: 8006 MB in 2.00 seconds = 4004.33 MB/sec > Timing buffered disk reads: 252 MB in 3.01 seconds = 83.63 MB/sec > > # hdparm -tT /dev/sdb > /dev/sdb: > Timing cached reads: 8230 MB in 2.00 seconds = 4116.54 MB/sec > Timing buffered disk reads: 252 MB in 3.02 seconds = 83.55 MB/sec > > # hdparm -tT /dev/sdb > /dev/sdb: > Timing cached reads: 8446 MB in 2.00 seconds = 4224.36 MB/sec > Timing buffered disk reads: 230 MB in 3.02 seconds = 76.28 MB/sec > > Wikipedia says USB 3.0 has transmission speeds of up to 5 Gbit/s. > Doesn't MB/sec denote mega*bytes* per second? > > - Grant
4000MB/s = 4Gb/s
