this post was submitted on 27 Aug 2023
610 points (97.7% liked)
Technology
66892 readers
4558 users here now
This is a most excellent place for technology news and articles.
Our Rules
- Follow the lemmy.world rules.
- Only tech related content.
- Be excellent to each other!
- Mod approved content bots can post up to 10 articles per day.
- Threads asking for personal tech support may be deleted.
- Politics threads may be removed.
- No memes allowed as posts, OK to post as comments.
- Only approved bots from the list below, this includes using AI responses and summaries. To ask if your bot can be added please contact a mod.
- Check for duplicates before posting, duplicates may be removed
- Accounts 7 days and younger will have their posts automatically removed.
Approved Bots
founded 2 years ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
From what I understand, SMR is fine for NAS as long as you aren't doing a lot of reads. Like hosting a multimedia server that pulls videos and stuff from the NAS. I recently stood up a TrueNAS server a few months ago with SMR WD disks and it works fine for my use case. It's RAIDed and backed up to cloud storage. I'm now looking into standing up a media server, but I won't use that NAS storage for that.
The real downside to SMR drives is "random" writes; adjacent tracks need to be re-written, and then their adjacent tracks, and that keeps going until the tracks adjacent to a write happen to be empty. It doesn't matter much for long sequential writes (because adjacent tracks will be overwritten anyway). I think the re-writing process also hurts read performance for the host, but reads alone don't cause rewriting.
If you need to reshape/resilver your array (grow, shrink, or change geometry), it'll probably take weeks or months with an SMR drive compared to days for a CMR drive.
Yeah, SMR is fine for read. And for most homelabs, I'd guess it would be fine. SMR would be a bastard in a high read/write scenario like in an enterprise. But I think all the Red Plus and Red Pros are all CMR now. Only the base Reds have SMR from the sample I took.