If you want these servers to be in one VLAN you definitely will have troubles. Switches create CAM tables based on source MACs. So if one server generates frame - all switches will update their CAMs. Then another server will send something - all or some of switches will update their CAMs again. And again, again, again. Firstly, switches will detect the MAC-address flapping.

Secondly - traffic will not neccessarily come to the right server. Traffic will always be directed to that server which generated frame last.If servers will be in different broadcast domains (different VLANs) - it will be OK. How to recover deleted tally data. Actually the explanation that I got was that they made 2 of each mac address then they where sent to different parts of the world so they should never meet.Somehow we got a batch of 20 of them all with the same mac address.we never got a good reply on how that was able to happen.there where som quite interesting results when we set them all up.luckily today it would not have mattered since all you have to do is set another mac address with software.At that time it was not possible to change mac address easily.Good luckHTH.

Insanity, An Anthology. Each momentary. Hear the mistral thrashing inside his head. Dust-smeared nomad. Where'd you get your license, Mac?