[Gluster-users] Production cluster planning

[Joe Julian]

On 10/26/2016 02:04 PM, Joe Julian wrote:
> On 10/26/2016 02:02 PM, Gandalf Corvotempesta wrote:
>> 2016-10-26 22:59 GMT+02:00 Joe Julian <joe at julianfamily.org>:
>>> Personally, I prefer raid0 bricks just to get the throughput to 
>>> saturate my
>>> network, then I use replicate to meet my availability requirements
>>> (typically replica 3).
>> Isn't the ZFS cache on SSD enough to saturate the network?
>> I'll use replica 3, but I don't feel safe having the whole node in
>> RAID0, a single disk failure means the whole node to heal from scratch
>> and commodity disks are prone to fail
>
> I just add enough disks to saturate (and I don't like zfs, personally) 
> per-brick. So with 30 disks on a server, I typically do 5-disk raid-0 
> and create 6 bricks per server.
>

And yes, they can fail, but 20TB is small enough to heal pretty quickly.