Looking for replacement drives for a couple different terastations

[BMPSystems]

I got a couple different terastations given to me and need to find drives for them, there is no drives in them at all now. Below are the models:
WS-QV8.0TL/R5
TS-2.0TGL/R5
WS-6V12TL/R5
TS-X8.0TL/R5
 
Really hate to throw them away, I could use one here and I have a few customers that could use them as well.

Any help would e appreciated!

TIA, Jeff

[davo]

Forget the ts-tgl, it's ancient, any standard disks will work on the others but they need to be fully populated for the initial installation.