mirrored forwarding virtuals: really a performance problem?

I don't think that's a particularly high load or that it will be a problem. However, I would certainly recommend you think carefully about the protocol profiles you use with your wildcard Virtual Servers and things like Idle Timeouts etc. to ensure memory and CPU resources are not used unnecessarily. I'd also think carefully about using any iRules or Packet Filters.

 

 

Ideally you would make this change in a staged fashion rather than all at once.