Dell PowerFlex Rack with PowerFlex 3.x Administration Guide

Place a fault set in maintenance mode

Place a fault set into the maintenance mode to perform non-disruptive maintenance on the group of storage data servers.

1. Log in to the PowerFlex GUI.
2. Click Configuration > Fault Sets.
3. Select Fault sets and click More > Enter Maintenance Mode.
4. In the Enter Fault Set to Maintenance Mode dialog box, select one of the following maintenance mode options:
   1. Instant – a node is temporarily removed without building a new copy of the data. During maintenance, the system only mirrors new writes. After the maintenance is complete, the system applies the new writes to the node that was under maintenance.
   2. Protected – a third copy is created before entering maintenance mode. This ensures that if there is a node failure where the second copy of storage data server is required, there is still a full backup of the storage data server. The mode also ensures that there is no difference between the copies and more storage capacity from the node is required.
5. Click Enter Maintenance Mode.
6. Verify that the operation is successfully complete, and then click Dismiss.
7. Optionally, on the upper right side of the toolbar, click the Running Storage Jobs icon to check the maintenance mode status.