Viewing the disk sync status
When data rebalancing is ongoing or a recovery task is in progress, the disk is marked as faulted and the progress for the disk sync operation is shown in the UI instead of the disk status. You can monitor the progress on the page. The node to which the disk belongs is shown unhealthy in the UI.
A disk can be in recovery task during the following operations:
Replace disk
Add node
Replace node
Reboot node (shutting down and starting the node manually)
The following figure is an example of the disk sync status shown in the UI: