From: invalid@invalid.invalid   
      
   Stéphane CARPENTIER  writes:   
   > Lars Poulsen  a écrit :   
   >> Lawrence D’Oliveiro  wrote:   
   >>> This is why you have backups.   
   >>   
   >> Yeah, but do you know how long it takes to backup two terabytes   
   >> over a USB port?   
      
   USB 3.0 starts at about 500 Mbyte/second, so best case is less than a   
   couple of hours even with 15-year-old equipment. You may well have   
   trouble maxing it out, but USB isn’t likely to be the problem here.   
      
   > What for? If you are working for a hi-tech company, you have better ways   
   > to backup huge amount of data. If you are at home, waiting for your data   
   > to take two terabytes of space before considering backup is already too   
   > late.   
      
   As it happens I had cause to reinitialized a backup disk recently. It   
   took about 42 hours to backup a bit under 2TB using rsync. Much of the   
   data was on local SSD but some of it had to cross a network; the backup   
   disk is a portable hard disk and is probably the biggest single   
   bottleneck.   
      
   --   
   https://www.greenend.org.uk/rjk/   
      
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