V9.2.1 to 10.2.1 active/passive

In order to install 10.2.1 you will need to re-format because the v9 partition sizes are not big enough for v10 (this saves config). Here's an SOL about installing 9 and 10 on a partition formatted system: http://support.f5.com/kb/en-us/solutions/public/9000/700/sol9745.html

 

 

If you don't _need_ to run v9 and v10 on the same device, you should probably just format to volumes (suggested) and just run v10 only.

 

 

When you unplug that serial cable, both of your devices are going to go active unless you have network failover configured. Regardless of that though, network failover is not compatible between those versions: http://support.f5.com/kb/en-us/solutions/public/9000/000/sol9057.html