I posted this last week but I can't find it anywhere in the forums; sorry if this is a repeat.
I have an ASA5505/unrestricted with security plus and would like to implement active/standby failover. For the secondary unit, do I have to buy a second unrestricted unit with security plus? Or will it work with the security plus license?
On the 5505 there are two licenses, the Base license and the security plus license. You'll need the security plus license on the standby unit for it to sync to the active unit.