[lug] Big External USB copies and Speed

[Gordon Golding]

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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