Finally, I began with a software solution and maybe later for the hardware solution.
I want to use the “Failover IP” of Apple. But I have a problem.
I use two xserve for testing the solution (one xserve intel and one xserve G5). When my primary server is out, the secondary server take the primary IP (it’s good) but when the primary is up, the secondary don’t give the primary IP …
On the primary server, I have an error message: “the adress IP is already use”.
I read on the net that this technologie is not possible on intel … And is not possible between intel and G5 …
Maybe have you an idea ?