Re: [ceph-users] Yet another hardware planning question ...

2016-10-20 Thread Christian Balzer
Hello, On Thu, 20 Oct 2016 07:56:55 + Patrik Martinsson wrote: > Hi Christian,  > > Thanks for your very detailed and thorough explanation, very much > appreciated.  > You're welcome. > We have definitely thought of a design where we have dedicated nvme- > pools for 'high-performance' as

Re: [ceph-users] Yet another hardware planning question ...

2016-10-20 Thread Patrik Martinsson
Hi Christian,  Thanks for your very detailed and thorough explanation, very much appreciated.  We have definitely thought of a design where we have dedicated nvme- pools for 'high-performance' as you say.  At the same time I *thought* that having the journal offloaded to another device *always*

Re: [ceph-users] Yet another hardware planning question ...

2016-10-13 Thread Christian Balzer
Hello, On Thu, 13 Oct 2016 15:46:03 + Patrik Martinsson wrote: > On tor, 2016-10-13 at 10:29 -0500, Brady Deetz wrote: > > 6 SSD per nvme journal might leave your journal in contention. Canyou > > provide the specific models you will be using? > > Well, according to Dell, the card is called

Re: [ceph-users] Yet another hardware planning question ...

2016-10-13 Thread Patrik Martinsson
On tor, 2016-10-13 at 10:29 -0500, Brady Deetz wrote: > 6 SSD per nvme journal might leave your journal in contention. Canyou > provide the specific models you will be using? Well, according to Dell, the card is called "Dell 1.6TB, NVMe, Mixed Use Express Flash, PM1725", but the specs for the card

Re: [ceph-users] Yet another hardware planning question ...

2016-10-13 Thread Brady Deetz
6 SSD per nvme journal might leave your journal in contention. Can you provide the specific models you will be using? On Oct 13, 2016 10:23 AM, "Patrik Martinsson" < patrik.martins...@trioptima.com> wrote: > Hello everyone, > > We are in the process of buying hardware for our first ceph-cluster.

[ceph-users] Yet another hardware planning question ...

2016-10-13 Thread Patrik Martinsson
Hello everyone,  We are in the process of buying hardware for our first ceph-cluster. We will start with some testing and do some performance measurements to see that we are on the right track, and once we are satisfied with our setup we'll continue to grow in it as time comes along. Now, I'm jus