Two big disruptions have upended the enterprise data center and infrastructure stack for large companies: virtualization and flash storage.

FORBES: Why Storage Technology Is Disrupting The Enterprise

However even with data center developments such as compression, virtualization and deduplication the costs of on-line storage exceed that of local storage and the performance of on-line storage is significantly less than local storage.

FORBES: Is 64 GB Big Enough -- Why Tablet Computers May Need More Storage?