I have measured the transfer on the following disk to be 2.75MB/s:

iManufacturer           2 Seagate
iProduct                3 BUP Slim SL

The interface is USB2 so it should be fastered than that:

bcdUSB               2.10

I've done:

hdparm -W1 /dev/sdd
mount /dev/sdd1 -o data=writeback,barrier=0 /mnt/c

I'm copying Debian 7 VM files to it so there's quite a number of small files. Still.

What are the reasons for this? How do I improve on that?

Host OS: Debian 7.11.

  • Upgrade to a currently supported Debian release? – Michael Hampton Jan 27 at 22:28
  • Hi, is it a usb hdd with an external power adapter ? can you test the speed with a usb stick ? – yagmoth555 Jan 27 at 22:30
  • 1
    @MichaelHampton: that's saving the data before the upgrade to a currently supported Debian release. – LetMeSOThat4U Jan 27 at 22:48

Connect the hard drive to a USB 3.0 port if available. The specs for the slim drives support usb 3.0 which is much faster. A transfer speed of 2mb/s is normal for usb 2.0.

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