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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, 5:00 pm
  #6  
glob99
 
Join Date: Jan 2005
Posts: 815
Real USB 2.0 speed is about 30-35MB/s. I guess these HD are 5200rpm units so 80MB/s sustained speed seems reasonable.
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