Hello.
For our CCTV storing streams project we decided to use Ceph cluster with
EC pool.
Input requirements is not scary: max. 15Gbit/s input traffic from CCTV,
30 day storing,
99% write operations, a cluster must has grow up with out downtime.
By now our vision of architecture it like:
* 6 JBOD with 90 HDD 8Tb capacity each (540 HDD total)
* 6 Ceph servers connected to it own JBOD (we will have 6 pairs: 1
Server + 1 JBOD).
Ceph servers hardware details:
* 2 x E5-2690v3 : 24 core (w/o HT), 2.6 Ghz each
* 256 Gb RAM DDR4
* 4 x 10Gbit/s NIC port (2 for Client network and 2 for Cluster Network)
* servers also have 4 (8) x 2.5" HDD SATA on board for Cache Tiering
Feature (because ceph clients can't directly talk with EC pool)
* Two HBA SAS controllers work with multipathing feature, for HA scenario.
* For Ceph monitor functionality 3 servers have 2 SSD in Software RAID1
Some Ceph configuration rules:
* EC pools with K=7 and M=3
* EC plugin - ISA
* technique = reed_sol_van
* ruleset-failure-domain = host
* near full ratio = 0.75
* OSD journal partition on the same disk
We think that first and second problems it will be CPU and RAM on Ceph
servers.
Any ideas? it is can fly?
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