Cluster

A storage cluster is operated through the sbctl command line interface, which talks to the control plane. The topology settings of a cluster, its failure domains and its node affinity, are cluster-level properties and are read whenever the placement of data is decided.

Topic	Purpose
Upgrading a Cluster	Upgrading the control plane and the storage plane of a running cluster.
Managing Failure Domains	Grouping storage nodes into fault groups, so that chunks are spread across them.
Configure Node Affinity	Keeping the data of a logical volume on the storage node that owns it.