Thanks William ! I'm really interested in any contention issues between the compute workload and the storage workload in converged nodes, and how folks who are doing this are managing that.
On 3 September 2016 at 13:21, William Josefsson <william.josef...@gmail.com> wrote: > Hi matt, the hardware depends on your workload requirements, > especially when we are talking latency. I do Dell PE R630s for > Controllers, and R730 for Compute/Ceph. The latter got 8x400G Intel > S3610+18xHitachi 1.8T SAS. Depending on the workload sensitivity if > you have DBs and long distance between servers, you probably wanna > look at fiber NICs and Switches, mellanox is popular but doesn't come > for free. I do pure 6x10G Intel ixgbe in the 730s, all bonded LACP to > Arista 7050X copper, total capacity per bond is 20Gbit (2x10G active > active). I will test a pure flash array and see how it works too. > > If you have some very large flash array, you may wanna consider single > socket. You can watch this video where they run DBs etc., on pure > flash arrays and give some advice > https://www.youtube.com/watch?v=OqlC7S3cUKs . thx will > > On Wed, Aug 31, 2016 at 8:01 PM, Matt Jarvis > <matt.jar...@datacentred.co.uk> wrote: > > Time once again to dredge this topic up and see what the wider operators > > community thinks this time :) There were a fair amount of summit > submissions > > for Barcelona talking about converged and hyper-converged > infrastructure, it > > seems to be the topic de jour from vendors at the minute despite feeling > > like we've been round this before with Nebula, Piston Cloud etc. > > > > Like a lot of others we run Ceph, and we absolutely don't converge our > > storage and compute nodes for a variety of performance and management > > related reasons. In our experience, the hardware and tuning > characteristics > > of both types of nodes are pretty different, in any kind of recovery > > scenarios Ceph eats memory, and it feels like creating a SPOF. > > > > Having said that, with pure SSD clusters becoming more common, some of > those > > issues may well be mitigated, so is anyone doing this in production now > ? If > > so, what does your hardware platform look like, and are there issues with > > these kinds of architectures ? > > > > Matt > > > > DataCentred Limited registered in England and Wales no. 05611763 > > _______________________________________________ > > OpenStack-operators mailing list > > OpenStack-operators@lists.openstack.org > > http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-operators > > > -- DataCentred Limited registered in England and Wales no. 05611763
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