GreenLake for File Storage provides more security, allowing customized security for different file types. Block Storage can't do that. That's the most intriguing feature I have always looked for in a FlashArray or file system.
The file system arrays have multiple nodes, so one node automatically comes up if another goes down. The system should allow the primary node to remain the master node and the secondary node to function as a non-master node. HP has already deployed AI in GreenLake's cloud features, but they should also integrate them into the flash array.