this post was submitted on 09 Feb 2024
20 points (100.0% liked)

Selfhosted

40461 readers
485 users here now

A place to share alternatives to popular online services that can be self-hosted without giving up privacy or locking you into a service you don't control.

Rules:

  1. Be civil: we're here to support and learn from one another. Insults won't be tolerated. Flame wars are frowned upon.

  2. No spam posting.

  3. Posts have to be centered around self-hosting. There are other communities for discussing hardware or home computing. If it's not obvious why your post topic revolves around selfhosting, please include details to make it clear.

  4. Don't duplicate the full text of your blog or github here. Just post the link for folks to click.

  5. Submission headline should match the article title (don’t cherry-pick information from the title to fit your agenda).

  6. No trolling.

Resources:

Any issues on the community? Report it using the report flag.

Questions? DM the mods!

founded 2 years ago
MODERATORS
20
Second hand disks? (www.ebay.ca)
submitted 9 months ago* (last edited 9 months ago) by [email protected] to c/selfhosted
 

What do you think about buying second hand disks and using higher redundancy?

For example 4x 16TB in RAIDz2? Is anyone using something like that? How's it performing, reliability-wise?

E: Thanks all for the opinions and information!

you are viewing a single comment's thread
view the rest of the comments
[–] NarrativeBear 7 points 9 months ago (1 children)

I got the same setup with eight 18TB Exos drives running in a RAIDz2 with an extra spare. Added to this though I got another vdev of eight 12 WD reds with another spare.

With this I can have 2 drives fail in a vdev at any point and still rebuild the pool. Though if more than 2 drives all fail at the same time the whole pool is gone.

But if that happens I have a second NAS offsite at my bro's place that I backup specific datasets. This is connected with tailscale and a zfs replication task.

[–] [email protected] 3 points 9 months ago (1 children)

I dunno, like I said zfs is pretty damn good at recovery. If the drives simply drop out but there's no hardware fault you should be able to clear the errors and bring the pool back up again. And the chances of two drives failing at the same time are pretty low. One of these days I do need to buy a spare to have on hand though. Maybe I'll even swap out one drive just to see how long it takes to rebuild.

[–] [email protected] 1 points 9 months ago

Do it. The last thing you need during a rebuild is the stress of not knowing how long / other issues with your specific setup.

It's only "disaster recovery* if you've never practiced... orherwise it's just "recovery"