2x4TB WD reds[1] in RAID1 on an old (ca. 2008) desktop I turned into a low-spec Linux box. These days I just keep it powered off most of the time, so I don't ev

2x4TB WD reds[1] in RAID1 on an old (ca. 2008) desktop I turned into a low-spec Linux box. These days I just keep it powered off most of the time, so I don't even really pay for electricity. Unfortunately even though I'm using reds, which are designed for NAS use cases, I've had two drives fail since I set up this rig in 2015, which I suppose puts me at ~$30/year, though I use the 4TB for lots else as well. It's durable enough for me since it's easy enough to notice when a drive fails and very unlikely that the other will fail before you can replace it. [1]: https://www.microcenter.com/product/634744/wd-4tb-red-plus-5400rpm-sata-iii-6gb-s-35-internal-nas-hdd https://www.microcenter.com/product/634744/wd-4tb-red-plus-5...