I am having an issue with a couple of removable hard drives on a server of mine. I am running Windows Server 2008 standard 32bit and am using software called Paragon Hard Disk Manager to perform daily backups. I have two identical Western Digital Black 2TB hard drives in external USB enclosures. Every morning when I come into work and check on the overnight backup the USB drive that was being used is no longer marked as active in the OS nor is assigned a drive letter. the backups run and are successful but I am having to go in every day and re-activate the hard disk and assign a drive letter so I can use it the next night. what am I missing here? This is becoming a major issue because I have different employees rotate doing the backups each day and Its not feasible to have them perform these steps. Does anyone know what may be causing this or how I can correct it?