[Discuss] Backing up the entire filesystem

[Shirley Márquez Dúlcey]

My NAS boxes each have 16GB. One has two 4TB and two 3TB drives in
mirrored pairs; the other has three 1.5TB drives in a RAIDZ1 setup.
And that's just for being a NAS. I would probably need more RAM,
especially on the one with four drives, if I were also running
applications on them.

Why two smaller boxes rather than one big one? Mostly because I
already own a pair of low end AMD systems using mini-ITX motherboards
and AM1 socket CPUs that I originally got for another purpose but was
no longer using, and I already had all the drives. Those motherboards
only have two DDR3 memory sockets and thus have a RAM ceiling of 16GB,
and the cases will only hold four hard drives.
On Fri, Oct 26, 2018 at 2:04 PM Marco Milano <marco.milano at gmx.com> wrote:
>
>
>
> On 10/26/18 1:55 PM, Shirley Márquez Dúlcey wrote:
> > Another thing to keep in mind is that ZFS does have one flaw; it's a
> > memory hog. If you have a large ZFS filesystem you will need a LOT of
> > RAM to get acceptable performance. But it does represent the current
> > state of the art for file system data integrity.
>
> I think as long as you don't use dedup, it works perfectly fine
> on a system with 8GB or 16GB RAM.
>
> -- Marco
>
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