DP 7.0 EADR test on cell manager

I am testing the restore of the cell manager for a system that is running DP7. After booting the DR OS and starting the offline restore(Tape) process, I get the following error:

Cannot open exchanger control device ([2] The system Cannot find the file specified)

At the end of the restore attempt it give me the option to select one of the two tape drives as it sees it connected to the system.

Any ideas would be highly appreciated