[lug] Big External USB copies and Speed

Davide Del Vento davide.del.vento at gmail.com
Tue Oct 27 14:48:20 MDT 2009


If it's USB2, not less than 1TB / 480 Mbit/s = 1024 GB / 60 MB/s ~
17ks ~ 5 hours. And probably lot more.
If it's USB1 - you'd better give up.
Bye,
;Dav

On Tue, Oct 27, 2009 at 14:20, Gordon Golding <gordongoldin at aim.com> wrote:
> I'm doing some 1 Terabyte backups to external USB drives.
>
> In the past I've heard comments that:
>  the limiting factor is really the USB speed
> some brand drives are way faster than others
> the most important thing is:  are you copying big contiguous files or
> massive numbers of little tiny files
>
> Thoughts?
> Anybody have an estimate on how long a 1 TB copy would take?
>
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