Hello Everyone, Reading through the document: "Red Hat Hyperconverged Infrastructure for Virtualization 1.5 Automating RHHI for Virtualization deployment" Regarding storage scaling, i see the following statements: *2.7. SCALINGRed Hat Hyperconverged Infrastructure for Virtualization is supported for one node, and for clusters of 3, 6, 9, and 12 nodes.The initial deployment is either 1 or 3 nodes.There are two supported methods of horizontally scaling Red Hat Hyperconverged Infrastructure for Virtualization:* *1 Add new hyperconverged nodes to the cluster, in sets of three, up to the maximum of 12 hyperconverged nodes.* *2 Create new Gluster volumes using new disks on existing hyperconverged nodes.You cannot create a volume that spans more than 3 nodes, or expand an existing volume so that it spans across more than 3 nodes at a time* *2.9.1. Prerequisites for geo-replicationBe aware of the following requirements and limitations when configuring geo-replication:One geo-replicated volume onlyRed Hat Hyperconverged Infrastructure for Virtualization (RHHI for Virtualization) supports only one geo-replicated volume. Red Hat recommends backing up the volume that stores the data of your virtual machines, as this is usually contains the most valuable data.* ------ Also in oVirtEngine UI, when I add a brick to an existing volume i get the following warning: *"Expanding gluster volume in a hyper-converged setup is not recommended as it could lead to degraded performance. To expand storage for cluster, it is advised to add additional gluster volumes." * Those things are raising a couple of questions that maybe for some for you guys are easy to answer, but for me it creates a bit of confusion... I am also referring to RedHat product documentation, because I treat oVirt as production-ready as RHHI is. *1*. Is there any reason for not going to distributed-replicated volumes ( ie: spread one volume across 6,9, or 12 nodes ) ? - ie: is recomanded that in a 9 nodes scenario I should have 3 separated volumes, but how should I deal with the folowing question *2.* If only one geo-replicated volume can be configured, how should I deal with 2nd and 3rd volume replication for disaster recovery *3.* If the limit of hosts per datacenter is 250, then (in theory ) the recomended way in reaching this treshold would be to create 20 separated oVirt logical clusters with 12 nodes per each ( and datacenter managed from one ha-engine ) ? *4.* In present, I have the folowing one 9 nodes cluster , all hosts contributing with 2 disks each to a single replica 3 distributed replicated volume. They where added to the volume in the following order: node1 - disk1 node2 - disk1 ...... node9 - disk1 node1 - disk2 node2 - disk2 ...... node9 - disk2 At the moment, the volume is arbitrated, but I intend to go for full distributed replica 3. Is this a bad setup ? Why ? It oviously brakes the redhat recommended rules... Is there anyone so kind to discuss on these things ? Thank you very much ! Leo -- Best regards, Leo David -- Best regards, Leo David