Disk/Pool Layout

[German Anders <ganders@xxxxxxxxxxxx>]

Hi all,

   I'm planning to deploy a new Ceph cluster with IB FDR 56Gb/s and I've the following HW:

3x MON Servers:

   2x Intel Xeon E5-2600@v3 8C

   256GB RAM

   1xIB FRD ADPT-DP (two ports for PUB network)

   1xGB ADPT-DP
  

   Disk Layout:
  

   SOFT-RAID:

   SCSI1 (0,0,0) (sda) - 120.0 GB ATA INTEL SSDSC2BB12 (OS-RAID1)

   SCSI2 (0,0,0) (sdb) - 120.0 GB ATA INTEL SSDSC2BB12 (OS-RAID1)

8x OSD Servers:

   2x Intel Xeon E5-2600@v3 10C

   256GB RAM

   1xIB FRD ADPT-DP (one port for PUB and one for CLUS network)
   1xGB ADPT-DP

   Disk Layout:

   SOFT-RAID:

   SCSI1 (0,0,0) (sda) - 120.0 GB ATA INTEL SSDSC2BB12 (OS-RAID1)
   SCSI2 (0,0,0) (sdb) - 120.0 GB ATA INTEL SSDSC2BB12 (OS-RAID1)

   JBOD:

   SCSI9 (0,0,0) (sdd) - 120.0 GB ATA INTEL SC3500 SSDSC2BB12 (Journal)
   SCSI9 (0,1,0) (sde) - 120.0 GB ATA INTEL SC3500 SSDSC2BB12 (Journal)
   SCSI9 (0,2,0) (sdf) - 120.0 GB ATA INTEL SC3500 SSDSC2BB12 (Journal)
   SCSI9 (0,3,0) (sdg) - 800.2 GB ATA INTEL SC3510 SSDSC2BB80 (Pool-SSD)
   SCSI9 (0,4,0) (sdh) - 800.2 GB ATA INTEL SC3510 SSDSC2BB80 (Pool-SSD)
   SCSI9 (0,5,0) (sdi) - 800.2 GB ATA INTEL SC3510 SSDSC2BB80 (Pool-SSD)
   SCSI9 (0,6,0) (sdj) - 800.2 GB ATA INTEL SC3510 SSDSC2BB80 (Pool-SSD)

   SCSI9 (0,7,0) (sdk) - 3.0 TB SEAGATE ST3000NM0023 (Pool-SATA)
   SCSI9 (0,8,0) (sdl) - 3.0 TB SEAGATE ST3000NM0023 (Pool-SATA)
   SCSI9 (0,9,0) (sdm) - 3.0 TB SEAGATE ST3000NM0023 (Pool-SATA)
   SCSI9 (0,10,0) (sdn) - 3.0 TB SEAGATE ST3000NM0023 (Pool-SATA)
   SCSI9 (0,11,0) (sdo) - 3.0 TB SEAGATE ST3000NM0023 (Pool-SATA)

I would like to have an expert opinion on what would be the best deploy/config disk pools and crush map? any other advice?

Thanks in advance,

Best regards,

German

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