>>If you have 6 app servers it's just daft to stick 6 NICs in your DB
>>server.
>>
>>
>
>While there might be some cases where that makes sense most likely it
>isn't something you would want to do. I believe the original motivation
>was to solve bandwidth congestion rather than security.
>
>
>
If the NICs are saturated then channel bonding is the answer. Any
modern switch and OS will let you bind together multiple NICs so they
appear as one. You can get an 4Gbps link this way.