An original host cannot take back its unique responsibilities that have been taken over until the promoted host gives them up. If the original host becomes enabled during a window of a function that the promoted host is currently performing, then the original host does not perform the unique functions that have been taken over. Once the promoted host has given up the unique responsibilities, the original host takes those responsibilities back and resumes normal processing.

Example: If it restarts during the autobackup window, the original primary host will not perform the three unique autobackup functions, but will start with volume backups. If the promoted host has already completed the function for the current window, then the original host will not perform the function until the next window.