In a smart bit of niche identification and gap-filling, stuffy old CA Technologies is getting mainframe backup data to Amazon's cloud by going through Riverbed. With such a nifty move anybody would think CA has new management. Guess what? It has, with new CEO Michael Gregoire spurring the company on to do better. Start out with …
"Start out with a backup product for System z mainframes such as CA's ARCserve"
ARCserve doesn't backup Z/Servers as far as I know, with the exception of z/Linux IIRC. Also, ARCserve is a Windows only server