First, any recommendations on which 10.x version to go to from 9.1.x? Secondly, are there any special considerations to be aware of when making the move to a new version level? Fairly large environment running Panorama, Loggers, 100+ FW's.
All things Palo Alto Networks
10.1.6 because 10.0.x is EoL The upgrade considerations are fairly straight forward, you will want to schedule more than a few maintenance windows so you can handle upgrades in batches and leave some time just in case there's any hickups Always start with the panorama, then the log collectors, then do the firewalls from least critical to most critical, or critical first (in case of urgent hotfixes) and then do the rest in a different window