Beginning with 12.4.10 release AMD is now provided in two flavors:
1) classic AMD architecture = existing AMD architecture prior 12.4.10
2) high speed AMD architecture - this is new AMD architecture, allowing up to 20 Gbps capacity.
Before you start the AMD upgrade, please check the following documentation for better understanding:
I just upgraded to 12.4.12 two weeks ago with Redhat 6.8. I ran into 1 issue while upgrading the AMDs. I needed to upgrade tomcat to version 6.0.24-80 or higher for the install to complete. When I executed the bin file with --test-system I received a message that everything was OK. However the install failed part way through, then I received a message about the tomcat version. So I recommend you check your version of tomcat and upgrade that before trying to upgrading to 12.4.12