On 07/05/2017 08:54 PM, Massimiliano Cuttini wrote: > Dear all, > > luminous is coming and sooner we should be allowed to avoid double writing. > This means use 100% of the speed of SSD and NVMe. > Cluster made all of SSD and NVMe will not be penalized and start to make > sense. > > Looking forward I'm building the next pool of storage which we'll setup > on next term. > We are taking in consideration a pool of 4 with the following single > node configuration: > > * 2x E5-2603 v4 - 6 cores - 1.70GHz > * 2x 32Gb of RAM > * 2x NVMe M2 for OS > * 6x NVMe U2 for OSD > * 2x 100Gib ethernet cards > > We have yet not sure about which Intel and how much RAM we should put on > it to avoid CPU bottleneck. > Can you help me to choose the right couple of CPU? > Did you see any issue on the configuration proposed? There are notes on ceph.com regarding flash, and NVMe in particular, deployments: http://tracker.ceph.com/projects/ceph/wiki/Tuning_for_All_Flash_Deployments -- David Clarke Systems Architect Catalyst IT
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