How dumb would it be to run single-node ceph? (lemmy.ml)

submitted 4 months ago by jkrtn@lemmy.ml to c/selfhosted@lemmy.world

21 comments fedilink hide all child comments

I really want to run ceph because it fits a number of criteria I have: gradually adding storage, mismatched disks, fault tolerance, erasure encoding, encryption, support out-of-the-box from other software (like Incus).

But then I look at the hardware suggestions, and they seem like an up-front investment and ongoing cost to keep at least three machines evenly matched on RAM and physical storage. I also want more of a single-box NAS.

Would it be idiotic to put a ceph setup all on one machine? I could run three mons on it with separate physical device backing each so I don't lose everything from a disk failure with those. I'm not too concerned about speed or network partitioning, this would be lukewarm storage for me.

you are viewing a single comment's thread
view the rest of the comments

[-] bastion@feddit.nl 1 points 4 months ago

No matter what setup you use, if you want redundancy, it'll cost space. In a perfect world, 30% waste would allow you to lose up to 30% of your disk space and still be OK.

..but that extra percentage of used space is the intrinsic cost.

this post was submitted on 07 Mar 2024

15 points (89.5% liked)

Selfhosted

37824 readers

376 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:

Be civil: we're here to support and learn from one another. Insults won't be tolerated. Flame wars are frowned upon.
No spam posting.
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.
Don't duplicate the full text of your blog or github here. Just post the link for folks to click.
Submission headline should match the article title (don’t cherry-pick information from the title to fit your agenda).
No trolling.

Resources:

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

Questions? DM the mods!

founded 1 year ago

MODERATORS

HybridSarcasm@lemmy.world

HybridSarcasm@lemmy.hybridsarcasm.xyz