Originally Posted by k0nr4d

The electrical cost of running that will exceed the cost of cloud storage.

Cheapest cloud storage is backblaze - it will cost you $45/mo, or you might be able to get away with thier personal backup product which is $5/mo regardless of storage. Wasabi.com is also pretty cheap and in my experience faster transfer speeds then backblaze. I use wasabi personally.

Unfortunately $45-50/mo is about the cheapest you can backup that data short of using tape drives or something.