We switched to 9.5 with Nimble integration and it's super fast.
The only issue we're now having is that it fails (or set to warning if I modify the processing settings) on Guest Processing with:
Failed to inject guest runtime using guest interaction proxy, failing over to backup server
Failed to prepare guest for hot backup. Details: Failed to check whether snapshot is in progress (network mode). RPC function call failed. Function name: [IsSnapshotInProgress]. Target machine: [mpmExchange.MPM.local]. RPC error:Access is denied. Code: 5
Any ideas? I'm not able to cut SQL or Exchange logfiles a of right now.