On 2013-10-24 15:08, Nathan Stratton wrote:
9 - Samsung 840 EVO 120 GB SSD (1 root 8 ceph)
The EVO is a TLC drive with durability of about 1,100 write cycles.
Whether that is or isn't a problem in your environment of course is a
separate question - I'm just pointing it out :) If they are
On 10/24/2013 11:38 AM, Nathan Stratton wrote:
On Thu, Oct 24, 2013 at 11:19 AM, Kyle Bader wrote:
If you are talking about the links from the nodes with OSDs to their
ToR switches then I would suggest going with Twinax cables. Twinax
doesn't go very far but it's really durable and uses less po
On Thu, Oct 24, 2013 at 11:19 AM, Kyle Bader wrote:
> If you are talking about the links from the nodes with OSDs to their
> ToR switches then I would suggest going with Twinax cables. Twinax
> doesn't go very far but it's really durable and uses less power than
> 10GBase-T. Here's a blog post tha
On Thu, Oct 24, 2013 at 9:48 AM, Mark Nelson wrote:
> Ceph does work with IPoIB, We've got some people working on rsocket support,
> and Mellanox just opensourced VMA, so there are some options on the
> infiniband side if you want to go that route. With QDR and IPoIB we have
> been able to push a
> I know that 10GBase-T has more delay then SFP+ with direct attached
> cables (.3 usec vs 2.6 usec per link), but does that matter? Some
> sites stay it is a huge hit, but we are talking usec, not ms, so I
> find it hard to believe that it causes that much of an issue. I like
> the lower cost and
On 10/24/2013 09:08 AM, Nathan Stratton wrote:
I have tried to make Gluster FS work for last 2 years on different
projects and have given up. With Gluster I have always used 10 gig
Infiniband. Its dirt cheap (about $80 a port used including switch)
and very low latency, however ceph does not supp
I have tried to make Gluster FS work for last 2 years on different
projects and have given up. With Gluster I have always used 10 gig
Infiniband. Its dirt cheap (about $80 a port used including switch)
and very low latency, however ceph does not support it so we are
looking at ethernet.
I know tha