2. Software Defined Networks: SDN is a means to abstract the network just as server virtualization abstracts the server. It transforms the network topology from box/port at a time configuration to flow at a time -- linked to application. Abstracts the network like a hypervisor abstracts the server and it gives programmatic control. With SDN the controller has a view of the entire network topology both the virtual and physical components of it including switches, firewalls, ADC, etc. and provides the abstracted view to provisioning and managing the network connections and services that the applications and the operator requires.
OpenFlow is a great example of that generalized network tunneling protocol that provides a generic API that any network operator can use to create his own control and management schemes based on the application requirements of his organization. And there will be other OpenFlow type SDN protocols that are designed ground up from an application level logic than from the traditional network paradigm of protocol, device and link-based thinking.
When used along with encapsulations like OpenFlow SDN can be used to dynamically extend a private cloud into a hybrid model to masking the enterprise specific IP addresses from the cloud provider's infrastructure. SDN also promises to allow service providers to offer dynamic provisioned WAN services, potentially across multi-provider/multi-vendor networks. Of course, there is the potential for significant organizational disruption as traditional network skills begin to shift, and alignment with specific vendor products or platforms becomes less rigid.
3. Bigger data and storage: A fact that data centers have lived with for many years remains true today: Data growth continues unabated. From an IT perspective, one of the main issues is not awareness of the issue, but prioritization of the issues. We have spent so many years dealing with this, and surviving, that storage management projects are usually initiated from the ground up, rather than top-down, relegating many of these to "skunkworks" status with little long-term funding.