Re: Open Compute (OCP) servers for Ceph

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Not OCP but regarding 12 3.5 drives in 1U with Decent CPU QCT makes the following: https://www.qct.io/product/index/Server/rackmount-server/1U-Rackmount-Server/QuantaGrid-S51G-1UL and have a few other models with some additional SSD included in addition to the 3.5" 

Both of those compared here: https://www.qct.io/product/compare?model=1323,215

QCT does manufacture quite a few OCP models:
this may fit the mold: https://www.qct.io/product/index/Rack/Rackgo-X-RSD/Rackgo-X-RSD-Storage/Rackgo-X-RSD-Knoxville#specifications

On Fri, Dec 22, 2017 at 9:22 AM, Wido den Hollander <wido@xxxxxxxx> wrote:


On 12/22/2017 02:40 PM, Dan van der Ster wrote:
Hi Wido,

We have used a few racks of Wiwynn OCP servers in a Ceph cluster for a
couple of years.
The machines are dual Xeon [1] and use some of those 2U 30-disk "Knox"
enclosures.


Yes, I see. I was looking for a solution without a JBOD and about 12 drives 3.5" or ~20 2.5" in 1U with a decent CPU to run OSDs on.

Other than that, I have nothing particularly interesting to say about
these. Our data centre procurement team have also moved on with
standard racked equipment, so I suppose they also found these
uninteresting.


It really depends. When properly deployed OCP can seriously lower power costs for numerous reasons and thus lower the TCO of a Ceph cluster.

But I dislike the machines with a lot of disks for Ceph, I prefer smaller machines.

Hopefully somebody knows a vendor who makes such OCP machines.

Wido


Cheers, Dan

[1] http://www.wiwynn.com/english/product/type/details/32?ptype=28


On Fri, Dec 22, 2017 at 12:04 PM, Wido den Hollander <wido@xxxxxxxx> wrote:
Hi,

I'm looking at OCP [0] servers for Ceph and I'm not able to find yet what
I'm looking for.

First of all, the geek in me loves OCP and the design :-) Now I'm trying to
match it with Ceph.

Looking at wiwynn [1] they offer a few OCP servers:

- 3 nodes in 2U with a single 3.5" disk [2]
- 2U node with 30 disks and a Atom C2000 [3]
- 2U JDOD with 12G SAS [4]

For Ceph I would want:

- 1U node / 12x 3.5" / Fast CPU
- 1U node / 24x 2.5" / Fast CPU

They don't seem to exist yet when looking for OCP server.

Although 30 drives is fine, it would become a very large Ceph cluster when
building with something like that.

Has anybody build Ceph clusters yet using OCP hardaware? If so, which vendor
and what are your experiences?

Thanks!

Wido

[0]: http://www.opencompute.org/
[1]: http://www.wiwynn.com/
[2]: http://www.wiwynn.com/english/product/type/details/65?ptype=28
[3]: http://www.wiwynn.com/english/product/type/details/33?ptype=28
[4]: http://www.wiwynn.com/english/product/type/details/43?ptype=28
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--
Respectfully,

Wes Dillingham
Research Computing | Senior CyberInfrastructure Storage Engineer
Harvard University | 38 Oxford Street, Cambridge, Ma 02138 | Room 204
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