I have a pair of ASA 5520s in active/standby failover mode, single context. I'll be migrating to multiple context mode later this week. Do I need to break failover first? Or if I don't need to, should I? Or can I do this while maintaining failover? Can somebody tell me if either of these scenarios will work (or fail). I'll be remote, doing my work via SSH, but have somebody local who can console in if needed.
Migration option #1
Log into active/primary ASA
Configure Multiple Context mode
Reboot both devices
Login to active/primary ASA
Load context licenses (forget whether another reboot is necessary)
Configure contexts as desired
Migration option #2
Login to standby/secondary ASA
Remove from failover group (will I lose my connection?)
Configure multiple context mode; reboot
Login to active/primary ASA
Configure multiple context mode; reboot
Login to primary ASA; changeto system
Configure failover (as active and primary)
Login to secondary ASA; changeto system
Configure failover (as standby and secondary)
Load context licenses on active/primary (forget whether reboot is necessary)
Configure contexts as desired