Then I enable the quorum on the server side:

 

[root@gluster1 ~]# gluster volume set all cluster.server-quorum-ratio 51%

volume set: success

[root@gluster1 ~]#

[root@gluster1 ~]# gluster volume set volume1 cluster.server-quorum-type server

volume set: success

[root@gluster1 ~]#


You don't need to do it manually, there is a an option in Admin portal -> Storage -> Volumes -> Select Volume -> "three dots in upper right" -> Optimize for Virt Store

Best Regards,
Strahil Nikolov