I have two external HDDs and one backup job registered in the USB Backup plugin for each drive.
That way, by plugging in drive A it backs up one set of shared folders, and with drive B, a different set. So far, so good.
Question: if I use both drives simultaneously with a USB docking station and plug it in, will USB Backup run both backup jobs concurrently, or one after the other?
I would try it myself but I'm afraid they'll start running at the same time and cause disk thrashing (and take forever to finish).