Resizing a volume in a RDS

Hi guys.

I have a global cluster formed by 1 + 1 hosts in a RDS environment.

I would like to expand a volume/file system in every system, so I would like to check the correct procedure.

- stop the application 

- split the HA 

- execute the command for every system:

#vxresize -f -F ufs -g datadg lv_nms_data +40g 

- start the application

- join the HA

is this procedure correct ?

Thanks a lot.

Tiziano