Some External HDD Questions

[Jorge Delacruz]

--- Matt Graham <danceswithcrows at usa.net> wrote:

> After a long battle with technology, Jorge Delacruz
> wrote:
--- cut ---> 
> 2M/s?  That doesn't sound right for either USB1 or
> USB2.
> 

(perhaps the long technology battle is 1/2 of my
problem)

I plugged in a USB drive and dd the internal drive to
a file on the external USB drive.  It took 9 hours to
dd a 40 GB internal drive.
40 GB * 1024 MB/GB / (9 hrs * 60 min/hr * 60 sec/min)
= 40960 / 32400
= 1.2 MB/sec

I used USB2 hardware (this was a requirement on the
purchase), new drives, and a really new kernel with
USB2 support.  Maybe this is a limitation with dd? 
The external hard drive's light blinks alot and the
box seems I/O bound when I do it.



Jorge Delacruz


      ____________________________________________________________________________________
Shape Yahoo! in your own image.  Join our Network Research Panel today!   http://surveylink.yahoo.com/gmrs/yahoo_panel_invite.asp?a=7