Switching to cold standby

Hi guys,

I am running ASG V8.304 on a HP DL360 Server with 2 onboard NIC and a PCI NIC with 4 interfaces.
In case of a hardware failure, I have a cold standby Server (same hardware, the PCI NIC is also the same type).

Since I am using RAID-1 on this Server, I took one disk out and started the cold standby Server with this disk. Unfortunately the NICs won't come up. After checking the log files on the server, I only saw that they were automatically renamed from eth0-eth6 to eth6-eth11.
If I try for example "ifconfig eth6 up" the entire system freezes.
I also tried to change the status of one of the interfaces as described here: http://www.astaro.org/astaro-gateway...oot-login.html

Didn't help either.

Any ideas what I could do? Is there maybe a problem with the MAC addresses of the NICs, like Astaro locks somehow the access to the interfaces?

Thanks a lot in advance.