6027-3847 [E] [E] The serviceDrain state feature must be enabled to use this command. Upgrade the recovery group version to at least version to enable it.
Explanation
The mmchpdisk command option --begin-service-drain was issued, but there are back-level nodes in the cluster that do not support this action.User response
Upgrade the nodes in the cluster to at least the specified version and run the command again.