Home > Storage > PowerScale (Isilon) > Product Documentation > Storage (general) > PowerScale OneFS: Cluster Composition, Quorum, and Group State > SmartFailed and down nodes
Similar to accelerators, nodes in a SmartFail state show up both separately and in the regular group membership. For example, in the group:
{ 1-4:0-23, soft_failed: 1 }
Node 1 has been SmartFailed, but it is still part of the group. When the FlexProtect completes, the node will be removed from the group.
When a node has been SmartFailed, but is also unavailable, it will be listed as soft_failed but not listed as part of the group. For example:
{ 1-4:0-23, 6:0-17,19-24, down: 5, soft_failed: 5 }
Shows node 5 as both down and SmartFailed.
When a node is offline, other nodes will show that node as down, as in:
{ 3-4:0-8, 5:0-6,8, 9:1-2,4-6,8, 12:0-11, down: 6 }
Note that no disks for that node are listed, and that it does not show up in the group.
If the node is split from the cluster—that is, if it is online but not able to contact other nodes on its back-end network—that node will see the rest of the cluster as down. Its group might look something like { 6:0-11, down: 3-5,8-9,12 } instead.
When calculating whether a cluster is below protection level, SmartFailed devices should be considered ‘in the group’ unless they are also down: a cluster with +2:1 protection with three nodes up but smartfailed does not pose an exceptional risk to data availability.