So what matters: servers or storage?
So HP is big in servers, they'd want to perpetuate that situation, wouldn't they? EMC is big in storage and virtualisation, that's their land grab.
My crystal ball suggests servers don't matter that much anymore. You certainly need somewhere to look after your data though.
All this server cache stuff is transitory. If there's money to be made from apps that are disk IO bound then they'll migrate into a high performance, consolidated compute & storage platform. That only needs to offer a hypervisor on top of we know as a storage system. Presentation & session management can stay out there on the network.
Only my tuppence worth, t'ra.