On Fri, Jul 6, 2018 at 12:17 PM, Tal Bar-Or <tbaror@gmail.com> wrote:
Hello All,
I am about deploying a new Ovirt system for our developers that we plan to be hyperconverged environment Node based.

The system workload would be mostly used for builders that compiling our code , which involves with lots of small files and intensive IO.
I plan to build two glustered volume "layers" one based on sas drives for OS spin on, and second for Nvme based for intensive IO.
I would expect that the system will be resilient/high availability and in the same time give enough  good IO request for vm builders that will be at least 6 to 8 vm guests.
The system hardware would be as follows:
chassis: 4x HP DL380 gen8
each server hardware:
cpu: 2x e5-2690v2
memory:256GB
Disks:12x 1.2TB sas 10k disks , 2 mirror for os (or using usk kingstone 2x 128gb mirror) rest for vm os volume.
Nvme: 2x960GB Kingstone KC1000  for builders compiling source code
Network: 4 ports  Intel 10Gbit/s SFP +

Given above configuration and theory,  my question would be what would be best practice in terms of Gluster configuration Distributed,Replicated,Distributed Replicated,Dispersed,Distributed Dispersed?
What is the suggestion for hardware raid type 5 or 6 , or use ZFS?

Replicated or distributed-replicated with replica 3 or replica 3 with arbiter. Plain distribute will not provide HA for the data. Dispersed volume types are not fully integrated and supported with oVirt

Network nodes communication , i intend to use 3 ports for storage communication and one port for guests network , my question regarding Gluster inter communication , what is better would i gail from 3x 10G LACP or 1 network for each gluster volume?

3x10G - since we do not really have a way to separate networks by each gluster volume.


Please advice
Thanks

--
Tal Bar-or

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