The computer holds 2 hard drives. The boot disk is partitioned into Windows and Xubuntu. It has drives C, D, T, S and Xubuntu plus a recovery partition. C is the Windows System, D the software installed, T is a temporary storage drive and S holds all the installs of all the software used on each computer in the network be it Android, Windows or Xubuntu. The 2nd drive, E, is only used to hold Windows profiles or user data a symbolic link from C:\Users.
Everything else is a USB attached drive excluding the DVD Z and the virtual CD drive Y and the 2 drive pools F and G.
The virtual drve pools. One is used to hold all the full backups and the second holds all the differential backups. They are composed of all those partitions without mount points, some entire disks while others are just partitions on other disks.
The No Media drives are mostly were USB drives that have gone to bit heaven. There seems to be no way to get rid of them short of deleting them from the registry I presume.
B is a USB connected disk dock that allows me to take a foreign 3 1/2" or 2 1/2" hard disk and attach it to the system just by dropping it in the dock.
Then there are drives H, I, J, K all seperate drives with inbound data that has to be processed onto one of 2 output partitions M or V.
I have no RAIDS. I tried them long ago and they seemed to not always be able to recover from a drive loss and when they could it took forever rebulding that data so I keep the backups instead which is a lengthy process but if I need the data it's there and ready to go.