Hi. I've got 4 7210 controllers, about 700 AP's in a hospital, split over 2 sites. (2 at Location A including Master, 2 at location B)
How's best to start the migration, can I take one controller offline , upgrade and then start sorting the config out, moving AP groups to cause less outage. Or do I use the migration tool and do everything?
looking for minimal downtime as possible being a hospital, but I will get a small window. Or I can upgrade and move AP groups as and when I can.
thanks