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Forum Discussion
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.
Wow! About 12 days, amazingly slow.
And I noticed a strange thing. Frontview had forgotten rsync protocol settings for all my shares since last successful rsync backup. Strange.
Started: Sun Jan 11 22:42
Finished: Fri Jan 23 12:48
Wow! About 12 days, amazingly slow.
And I noticed a strange thing. Frontview had forgotten rsync protocol settings for all my shares since last successful rsync backup. Strange.
3 Replies
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- Was the disk NTFS formatted?
If so, your times (though horrible) are about right. viewtopic.php?f=31&t=72328#p402015
(2*1024*1024*1024*1024)/(2500000*86400) -> 10 days. Using rsync will likely slow it down further. StephenB wrote: Was the disk NTFS formatted?
If so, your times (though horrible) are about right. viewtopic.php?f=31&t=72328#p402015
(2*1024*1024*1024*1024)/(2500000*86400) -> 10 days. Using rsync will likely slow it down further.
Drive is formatted as EXT2.
Can you elaborate on your calculation?- 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
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