[PVE-User] CEPH Requirements

David Thompson david at digitaltransitions.ca
Wed Feb 5 15:32:44 CET 2014

Thanks for all the replies. I just want to supplement this with a cheap solution for now for testing as I said in the original email. 

What I’ll do just to get my head wrapped around CEPH setup is built it as a virtualized system for the time being. Performance for me isn’t the big deal here, more for me is just how to setup the overall system. 
I didn’t know I could virtualize it and test it, so thats actually really good.

Thanks all,

David Thompson 

On Feb 4, 2014, at 4:04 PM, Adam Thompson <athompso at athompso.net> wrote:

> On 2014-02-04 11:23, David Thompson wrote:
>> I’m trying to build a testing environment for as little as possible for CEPH testing, but not sure if this would work or not. The supermicro server runs Proxmox just fine, even though it states its not a supported hardware architecture, I can run openvz and KVM without any real issues.
>> The limitation on the server themselves outside of being a really high available server is its limited supported RAM configuration (32GB Max) and atom chip.
>> These servers are low power and priced quite low (~$500.00) for the server with CPU.
> I used a Dell C6100 4-node 2U chassis to build my cluster.  They're available on eBay or from various refurbishers for around $1000 per system, or $250/node, including 3 x 250GB HDD *per node*.
> I've been getting mine from "MET: The Server Store" (http://theserverstore.com/), where they satisfy "Good" and "Cheap" on the good/cheap/fast triangle :-).  And actually, they're not *that* slow at getting product to me.
> I've been getting each node filled with 48GB RAM and 3 x 250GB SATA HDD, using one HDD for PVE and two HDDs for CEPH.  Performance is not great, for the reasons Dietmar outlines (no journal, not enough OSDs overall) but it's acceptable.  If I replaced the two "data" drives with an SSD and a 1TB disk, I'd get better performance and more storage, but more $$$ too.
> -Adam Thompson
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