@michael We had configured Galera cluster in combination with GlusterFS for shared /html folder, it run well if you have it on SSD's. We did not setup on VSP, it was on our local servers. We end up removing this setup, due to auto increment. Galera controls the auto increment for each server in cluster. Issue is all your ID's ( Customer, login or product ) will be generated randomly based on which server is actively writing to database. If you do not care for the random ID numbers, then Galera works well.