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dd copy: How long does it take for a 3TB SATA Disk?
Saturday - Jun 1st 2013 - by - (1 comments)

If someone wondered, how long it takes to copy a 3TB SATA drive to another identical SATA drive with 'dd', here's your fact:

dd if=/dev/sdb3 of=/dev/sda3 conv=noerror,sync
5855286143+16 records in
5855286159+0 records out
2997906513408 bytes (3.0 TB) copied, 106038 s, 28.3 MB/s

So it took 106038 seconds = 1767.3 minutes = 29.455 hours.

15 sectors of the input drive (/dev/sdb3) were defect, that's why I used "conv=noerror,sync" which allows to ignore the read errors.


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Comments (newest first):

DD hell wrote on May 21st, 2017:
Thanks mine is doing 500kb/s si I reckon 100+ days :(

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