Proxmox mini-ATX build w/ZFS - advisable?

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karpodiem

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Mar 22, 2015
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I was looking at pick up the new Supermicro C236 mATX board, along with a 3.3GHz Xeon E3-1225 v5. Looking to run two or three VMs on 2x Samsung 850 Pros, in RAID1. VMs would be a ZFS pool.

Will I have enough horsepower to run the ZFS pool along with the VMs? Anyone perform a similar build lately?
 
I'm on a similar build on a Supermicro with a E3-1230 v3, 32GB, 1 x 850 Samsung SSD (yes EVO!) with more HDs coming and everything fine so far.

I dont run much more than few vm and lxc containers. I don't see why you couldn't run few vm unless you don't have much ram or having a lot of heavy random I/O. Add as much ram as you ca,n it's pretty much always the limiting factor anyway and it's also gonna help a lot for IO.
 
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It should work fine, though it's always better to have a RAID1 or better, make sure you tune the amount of RAM zfs uses down to a sensible value, it defaults to 50% I think.
 
Erk said:
It should work fine, though it's always better to have a RAID1 or better, make sure you tune the amount of RAM zfs uses down to a sensible value, it defaults to 50% I think.
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Think so too.
 
pizza said:
How much ram do you have? ZFS needs memory for performance.
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Starting off with 32GB DDR4, maxing out to 64GB once I know what I'm doing :)

I'm a first time Proxmox user, and I've read through the installation documentation. I created a ZFS pool and attached it to a Proxmox cluster. My understanding is that I now need to share this pool through NFS, so that it's available to my node. I can then store the VMs on this ZFS pool.

Is this accurate? How do I control the amount of RAM that ZFS gets? I was going to give it 16GB to begin with, with the remaining 16GB going to three VMs.
 
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