07-25-2011 07:46 AM
The SAN04M-R is a legacy McDATA device whereas 2398-B40 is a native Brocade one. These would require a special compatibility mode to operate together.
Please refer to Chapter 14, Interoperability for Merged SANs in Brocade Fabric OS Administrator's Guide (53-1001763-01).
Hope this helps,
07-31-2011 05:09 AM