Re: [ceph-users] How to think a two different disk's technologies architecture

Like Alex said network is not an issue now. For example I got a 6 node cluster with mix of sas and ssd disks running inside cassandra clusters with heavy load and also mysql clusters and Im getting less than 1ms of IO latency, on the network part i have infiniband with FDR configured and also

Re: [ceph-users] How to think a two different disk's technologies architecture

On Fri, Mar 24, 2017 at 10:04 AM Alejandro Comisario wrote: > thanks for the recommendations so far. > any one with more experiences and thoughts? > > best > On the network side, 25, 40, 56 and maybe soon 100 Gbps can now be fairly affordable, and simplify the

Re: [ceph-users] How to think a two different disk's technologies architecture

thanks for the recommendations so far. any one with more experiences and thoughts? best On Mar 23, 2017 16:36, "Maxime Guyot" wrote: > Hi Alexandro, > > As I understand you are planning NVMe for Journal for SATA HDD and > collocated journal for SATA SSD? > > Option 1: >

Re: [ceph-users] How to think a two different disk's technologies architecture

Hi Alexandro, As I understand you are planning NVMe for Journal for SATA HDD and collocated journal for SATA SSD? Option 1: - 24x SATA SSDs per server, will have a bottleneck with the storage bus/controller. Also, I would consider the network capacity 24xSSDs will deliver more performance

Re: [ceph-users] How to think a two different disk's technologies architecture

Hi, ceph speeds up with more nodes and more OSDs - so go for 6 nodes with mixed SSD+SATA. Udo On 23.03.2017 18:55, Alejandro Comisario wrote: > Hi everyone! > I have to install a ceph cluster (6 nodes) with two "flavors" of > disks, 3 servers with SSD and 3 servers with SATA. > > Y will purchase

[ceph-users] How to think a two different disk's technologies architecture

Hi everyone! I have to install a ceph cluster (6 nodes) with two "flavors" of disks, 3 servers with SSD and 3 servers with SATA. Y will purchase 24 disks servers (the ones with sata with NVE SSD for the SATA journal) Processors will be 2 x E5-2620v4 with HT, and ram will be 20GB for the OS, and