Hardware spec for proxmox + ceph, before we invest.

[potetpro]

Hi.
We are about to invest in Proxmox for our virtualization needs. But would like a second opinion before doing so.

We got 3 servers:

Server 1:
-2x 2640 v4 (40 threads)
-Ram: 96GB.

Server 2:
-2x E5645 (24 threads)
-Ram: 64GB

Server 3:
1x E5-2620 (12 threads)
-ram: 64GB

For drives, we are thinking 2x Samsung SM863a 480GB in each as Ceph nodes. and 2x sas in ZRAID for boot.

2x 10GBIT on each server for ceph storage, and 2x1GBIT for proxmox and vm's.

Initially this will be used to host 2 VM's, running windows 2016 terminal server, with a total of about 40-60 users.

Would this be good enough to get started with proxmox and ceph?

Thanks in advance

EDIT: we already have the servers. The investement would be the 6 SSD's, and the proxmox subscriptions.

 

[alexskysilk]

to get started, sure- but its completely unbalanced. the whole point of a cluster is to allow a member node to go down and retain service, which means that you need enough resources on n-1 nodes to operate the entire workload.

IF you only load it with enough work to fit on servers 2 and 3, you've wasted money on overprovisioning server 1. If you have more work on the cluster then can comfortably fit on servers 2 and 3, you've effectively created a spof, which begs the question why are you bothering with a cluster in the first place.

 

[potetpro]

to get started, sure- but its completely unbalanced. the whole point of a cluster is to allow a member node to go down and retain service, which means that you need enough resources on n-1 nodes to operate the entire workload.

IF you only load it with enough work to fit on server 3, you've wasted money on overprovisioning server 1. If you have more work on the cluster then can comfortably fit on servers 2 and 3, you've effectively created a spof, which begs the question why are you bothering with a cluster in the first place.

Yes, we are aware of this. I forgot to say, this is servers we already have. So we are trying to put together a setup that would be expandable. We are looking at a 3 node setup for HA, and to get Ceph started