<p dir="ltr">No one?</p>
<div class="gmail_extra"><br><div class="gmail_quote">Il 16 set 2016 18:53, "Gandalf Corvotempesta" <<a href="mailto:gandalf.corvotempesta@gmail.com">gandalf.corvotempesta@gmail.com</a>> ha scritto:<br type="attribution"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Next year i'll start with our first production cluster.<br>
I'll put on that many VMs images (XenServer, ProxMox, ...).<br>
<br>
Currently I have 3 SuperMicro 6028R-E1CR12T to be used as storage nodes.<br>
<br>
I'll put 2 more 10GbT cards on each.<br>
<br>
Primary goal is to have MAXIMUM data redundancy and protection.<br>
we can live with not top-notch performances but data protection must<br>
be assured all the time in all conditions.<br>
<br>
Some questions:<br>
1) should I create any raid on each server? If yes, which level and how many?<br>
- 4 RAID-5 with 3 disks each ? With this i'll create 4 bricks on each server<br>
- 6 RAID-1 with 2 disks each ? With this i'll create 6 bricks on each<br>
server (but space wasted is too high)<br>
- 2 RAID-6 with 6 disks each? With this i'll create 2 bricks on each server<br>
<br>
2) Should I use standard replication (replicate 3) or EC ?<br>
<br>
3) Our servers has 2 SSD in the back. Can I use this as tiering ?<br>
<br>
4) Our servers has 1 SSD inside (not hotplug) for the OS. What would<br>
happens in case of a crash of this SSD ? Is gluster able to recover<br>
the whole failed node ?<br>
</blockquote></div></div>