On Fri, Oct 26, 2018 at 02:18:12PM -0400, Shirley Márquez Dúlcey wrote: > 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 <[email protected]> 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.
The rule of thumb is 1GB per TB of used space, so for Shirley's NAS boxes, dedup would actually work. I don't recommend it, though. -dsr- _______________________________________________ Discuss mailing list [email protected] http://lists.blu.org/mailman/listinfo/discuss
