You can use a $20 "stand" and "raw" disks. I have 4 raws--1TB, 1.5TB, and 2TB.
The sweet spot for cheapest disks is now at 3TB. Unfortunately Dish doesn't allow, AFAIK.
I have about 11TB all together, including my 5 original WD 750GB ones, first $194 in '07.
Two of the 1TB single buys (a Buffalo and a Cavalry) have had bad transfer rates.
I removed (slowly) all the recordings and can now use them again but sometimes painfully.
Before the flood and sometimes now disks drop to $40/TB and sometimes even with cases.
I went with IMDb ranges on different disks. The problem comes with changing ratings.
You move a lot. Better in hindsight to just keep the disk name/color in the spreadsheet.
I would hate to lose the 8.4 and up drive. (Or any of them, for that matter, even 7.2 one.)
Eventually as you get better and smaller recordings there will be holes--fragmentation.
The big re-doing was the switch from MPEG-2 to MPEG-4, a factor of 2 and more for OTA.
If obsessive, just copy them to a new disk--a weekend project--and recycle the old one.
This doesn't help much for the 211. I'm using 2 722s and a 622--time to upgrade.
-Ken