The storage cluster is designed to automatically adapt when a volume (hard drive) or node fails for any reason. Swarm checks every storage cluster volume during the node startup procedure, and it tracks any gaps in service that trigger a status change:
A volume is considered "stale" and its the contents cannot be used unless an administrator specifically overrides this process if disconnected from the cluster for more than 2 weeks.
A node and all of its volumes are considered stale and cannot be used if it is shut down for more than 2 weeks.
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Force a volume remount by modifying the disk.volumes setting and adding the :k (keep) policy option. Return them to service dynamically (either remounting or reformatting) using SNMP. (v9.3)
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