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Forum Discussion
eton
Jan 23, 2015Luminary
Rsyncs time consumption over USB2 - report
Backup job: full backup with rsync of ~2TB from ReadyNAS to external USB HDD (USB2.0 ext2), with fast USB disk writes enabled. Started: Sun Jan 11 22:42 Finished: Fri Jan 23 12:48 Wow! About 1...
StephenB
Jan 24, 2015Guru - Experienced User
NTFS writes at ~2.5 MB/s on the duo. (2*1024*1024*1024*1024) is 2 TiB.
2500000 was the write speed per second (maybe should have used 2.5*1024*1024, but I didn't).
86400 is seconds per day.
So the calculation is the approximate time to copy the data to the volume.
EXT is much faster, so the formula doesn't apply. The speed could be limited by rsync
2500000 was the write speed per second (maybe should have used 2.5*1024*1024, but I didn't).
86400 is seconds per day.
So the calculation is the approximate time to copy the data to the volume.
EXT is much faster, so the formula doesn't apply. The speed could be limited by rsync
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