Troubleshooting : Recovery Node and PN Disk Space Alerts : A0902
  
A0902
Message: Volume DriveLetter of Recovery Node RNName is configured with disk space insufficient to create a new RN from the current snapshot. The previously built RN left unchanged. The snapshot data for the PN is intact and a new RN will be created after the configured disk space is increased. You should increase the amount of disk space allocated to this RN.
Cause: Initial vdisk size allocated for a volume on the PN is inadequate because of the growing data on the PN in the corresponding volume. In this case, the onQ Manager does not update the RN.
Solution: Resize the vdisk 15–20% over what is currently being used.