I have inherited a ZAM install at 7.50.0011 that is in serious need of an upgrade. I see that IR 18 is available, but need to see if I can do it in one shot. Can I just update using IR 18, or do I need to start with an earlier update and work my way to IR 18? And what should I expect as far as time and reboots? Do IR updates take a considerable amount of time and will I have to reboot? The database server that ZAM is installed on hosts databases for other applications as well and I need to know if I will be affecting the other SQL dependent applications.

Sorry for the noob questions, but this is all new to me.