HP StorageWorks C-Series Fabric Switches for NX-OS 4.1(1c) Release Notes (AA-RWEHR-TE, January 2009)

7 MDS Multilayer Director & Multilayer Fabric Switches Release Notes
- Once the 9513 is upgraded to NX-OS with Fabric-2 modules and reloaded, a downgrade
to SAN-OS will be disruptive.
- It is recommended for the pair of Fabric modules to be of the same model. Mixing
Fabric-1 and Fabric-2 modules with SAN-OS is supported. When mixing the two with
NX-OS the following must be considered:
o Before a reload – no issues with mixing Fabric-1 and Fabric-2
o After a reload – replacing Fabric-2 with a Fabric-1 is not supported
Refer to the Cisco MDS 9500 Series Hardware Installation Guide for additional information.