Home > Storage > PowerScale (Isilon) > Product Documentation > Storage (general) > PowerScale OneFS: Cluster Composition, Quorum, and Group State > Read-only nodes
A node that has been placed in read-only mode can be clearly identified in the group:
{ 1-6:0-8, soft_failed: 2, read_only: 3 }.
Node 3 is shown both as a regular group member and called out separately at the end, like accelerators and nodes that have been SmartFailed but are nevertheless still active.
The term "read only" indicates that OneFS will not write to the disks in that node; incoming connections to the node can still write to other nodes of the cluster.