Rsync is arguably my favourite protocol for backups. Whilst it is slow for full backups. It’s a great protocol for incremental backups. It compares files on the source and destination and only makes incremental changes to files. So if you have a 1GB file and add 1MB only 1MB needs to be backed up. The time taken to do the necessary calculations can make Rsync appear deceptively slower than it really is. There are some great guides for backing up a ReadyNAS to another ReadyNAS using Rsync e.g. Using Rsync for NAS-to-NAS Backups and Setting up Rsync over SSH but you can also use Rsync when backing up to a USB disk attached to the ReadyNAS!
Here’s what you need to do:
First do a full USB backup normally using Frontview backup.
1. Under Services > Standard File Protocols turn Rsync on.
2. Go to Volumes > USB Storage (if not found here the settings for the USB drive will be under Shares > Share Listing) and turn on Rsync for the USB drive and set the permissions.
3. Go to Backup > Backup Listing, and open a backup job’s properties to edit it.
4. Change the backup job properties to use Rsync. I can’t remember whether 127.0.0.1 (localhost) works. If it doesn’t work you can try the static IP address of the NAS.
5. Specify the path. This will be the name of the USB HDD e.g. USB_HDD_1 or perhaps USB_HDD_1/foldername
6. Press Test Connection to make sure you have the backup job settings correct.
7. If you want the backup to be an exact mirror of the source i.e. wipe the USB HDD (or folder inside that if specified), then make sure that the “Remove deleted files…” option is checked.
8. Check the rest of the settings and make appropriate changes (if any) then run the backup job.