Limiting network file transfer throughput with rsync


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To transfer a large amount of data (200GB) across a 100mbps network without saturating the connection, I used rsync with the –bwlimit=KBps flag.

Transferring from Windows to Ubuntu 9.04, I first mounted the windows share:

sudo mkdir /mnt/winshare
sudo mount -t smbfs -o username=user,password=pass //winserver/share /mnt/winshare

Next, run rsync with a specified bwlimit. Optionally, unmount the share

sudo rsync -vrR --delete --delete-excluded --bwlimit=6144 /mnt/winshare/* /destination/
sudo umount /mnt/winshare

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