How important is the CPU for ZFS?

I want to build a truenas server with the cheapest CPU I can find that can support ECC RAM: Celeron G4900T + 64gb ECC RAM + 4x18 TB SAS drives.

I don't have experience with ZFS or with truenas (core or scale), how much important is the CPU?

Use case: hundreds of thousands of small files mostly under 1 mb, but just 2-3 concurrent users

11 points · 6 comments · view on lemmy.world

6 Comments

eleitl@lemmy.ml · 1 pts · 3y (2 replies)

You don't mention your performance requirements and I'm unfamiliar with that CPU. Are you trying to saturate your 1G presumably NIC? Reads or writes?

Moonrise2473@feddit.it · 0 pts · 3y (1 reply)

No, just thousands of small files. Windows takes around a minute to enumerate all the files in the main share via SMB

eleitl@lemmy.ml · 1 pts · 3y

You should be good, then. Probably don't need SSDs for ZIL and L2RC either. Don't forget to schedule a weekly scrub, to catch bit rot. Essential for large drives.

Esra@lemmy.ml · 1 pts · 3y
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housepanther@lemmy.goblackcat.com · 1 pts · 3y

ZFS tends to be more RAM intensive so make certain you have, at bare minimum around 16GB. But I would push for more.

fnv@lemmy.ml · 1 pts · 3y

It’s ok until you start using jails or dedup.

Nogami@lemmy.world · -13 pts · 3y

In my (admittedly) limited experience with ZFS, it utilizes more RAM than CPU except for scrubs.

If you’re wondering about the downvotes, I got brigaded by PRC simps. Lemmy doesn’t yet have the protection against this that Reddit had.