I believe the file extension will be .FDF (although someone told me it will be a .FRD file) FYI... I have a used DAE from a SGI Clariion SAN and I need to use it with my EMC FC4700 Clariion. The drives in the DAE from the SGI Clariion have SGI firmware and are reported as unformatted by Navisphere Manager. I know how to format them in engineer mode, but it won't let me do the format due to the SGI firmware. Please help... thanks!