[bombcar]

There is for hard drives - SMART - the problem is, unless you're an enterprise (and let's all stop and laugh because we KNOW that most "enterprises" run at least some hardware until the only person who even knows it exists is long in the grave) you're not going to do preventative replacement.

And especially for home use, where nien 9s is more realistic than nine 9s, you're better off having a solid backup strategy and a source of spare parts.

My main "tank" server is 16 years old this year, and has blown out one motherboard - it was a bit annoying to be "offline" for a few days as a replacement wandered in from eBay, but it worked. If it happened today I might import the zpool into another device temporarily - or permanently, who knows? This R510 probably takes more power than a datacenter.

[organsnyder]

I run a k8s cluster in my homelab, with Longhorn providing storage. Except for some extra-large volumes for bulk storage (just movies in Jellyfin right now), everything is replicated three ways. I've had nodes fail to boot up after a power outage (turned out to be a dead CMOS battery) and procrastinated bringing them back up because everything just kept working.

[bombcar]

That’s the biggest danger with hot fail over at homelab setting. It keeps working so there’s no reason to fix it.