You don't really need a data and vmstore.  Vmstore I believe iaeamt to be the new iso domain but even it is not needed as all data domains act the same.  You can use a seperate data and vmstore domain because it will give you greater flexibility in terms of backing up thr volumes so you can choose to backup just the vm data and not images 

On Wed, Sep 12, 2018, 5:30 AM florentl, <florentl.info@laposte.net> wrote:
Hello,
I have one more question for the gluster deployment.
I have three servers with different disk sizes :
- server1 : 3 x SSD configured in raid 5 mode for a total capacity of 900 GB
- server2 : 6 x SSD configurerd in raid 6 mode for a total capacity of
2,2 TB
- server3 : same as server2 (2,2TB)
Because my server1 has less capacity than the others I will use it as an
arbiter volume (during the deployment I will declare it as the last host
: host3).
Is-it correct ?

So I will create 4 volumes :
- engine : 50 GB type replicated without arbiter
- data : ??
- vmstore : ???
- iso : 15 GB replicated with arbiter volume

Can someone tell me what are the differences between data and vmstore
volume ? In the earlier version there was only information about data
volume and export volume. I found nothing about vmstore volume.

If the wmstore is, as its name suggests, the place where all vm files
will be stored including vm disks images, I think I have to set most of
the capacity for this volume.
So at the end my 4 volumes will be :
- engine : 50 GB type replicated without arbiter
- data : 500 TB replicated with arbiter volume
- vmstore : 1,5 TB replicated with arbiter volume
- iso : 15 GB replicated with arbiter volume

What do you think of this ?

Thanks,

Florent

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