No way I'm expert and let see what other folks suggesting but I would say go with Intel if you only care about performance.
Sent from my iPhone > On Jul 19, 2018, at 12:54 PM, Steven Vacaroaia <ste...@gmail.com> wrote: > > Hi, > I would appreciate any advice ( with arguments , if possible) regarding the > best design approach considering below facts > > - budget is set to XX amount > - goal is to get as much performance / capacity as possible using XX > - 4 to 6 servers, DELL R620/R630 with 8 disk slots, 64 G RAM and 8 cores > - CEPH usage - mainly provide block device through SCST to VMWare > > I consider the following options ( if there is one that I miss, please let > me know) > > 1. > NVME + NLSAS, OS running on internal SD cards > 8 to 1 NVME/rotational drives ratio > > 2. > 2 x write intensive SSD RAID1 + 6 x NLSAS, OS running on a partition of > the RAID1 SSD > 6 to 1 SSD / rotational drive ratio > > 3. > 2 x write intesive SSD + 6 x NLSAS, OS on SD card > 3 to 1 SSD / rotationl ratio > > 4. "regular" SSD , OS on SD card > > For the drives, I have the following > > 'regular" SSD > Intel DC S4500 ( 900$) or Micron 5100 PRO ( 1100$) or SM863a (1300$) > NLSAS > Segate ST2000NX0403 > > Still debating the model for SSD write intensive > Models that I am considering > HGST Ultrastar SS300 HUSMM3240ASS200 ( 1200$) > SDLTMDKW- 200G-5CA1 ( 1600$) > > Still debating on NVME between Intel and Samsung > > Many thanks for any/all advice > > Steven > > > _______________________________________________ > ceph-users mailing list > ceph-users@lists.ceph.com > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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