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Thread: took Macbook Pro 10 hours to copy a 3TB drive to another 3TB drive, is that normal?
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Old Feb 13, 2016, 4:34 pm
  #5  
weltfrieden
 
Join Date: Dec 2015
Posts: 370
Originally Posted by deniah
more the problem of the drive, than the laptop (=usb controller and other)

top usb drives can do a sustained 100MB/s ...though ive never seen such. usually 60-80MB/s is what im happy to see whether in a usb stick, powered, or standalone 2.5/3.5" drive.

with that in mind, 3 terabytes at 80MB/s equates to a neat 10.5 hours

http://www.everythingusb.com/speed.html
(see the 3.5" section)
so my USB hard drives and Macbook are just fine? I guess it didn't help
that at least half of the 3TB contained my family digital photos, ranging
from 2MB(from really old digital cameras from 15 years ago) to 20MB
(current digital camera).
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