On all hosts (e.g. east{1,2,3} and west{1,2,3}):

Place both clusters into MAINTENANCE mode:

shell> cctrl
[LOGICAL] /east > use global
[LOGICAL] /global > set policy maintenance

On all nodes in both clusters:

shell> trepctl -all-services offline

shell> trepctl -all-services reset -all -y

shell> trepctl -all-services online

Return both clusters to AUTOMATIC mode:

shell> cctrl
[LOGICAL] /east > use global
[LOGICAL] /global > set policy maintenance