This article discusses trends that impact costs and performance related to data centers. These trends include big data, the cloud and centralized versus distributed storage:
Solving performance problems like data bottlenecks is a big concern for cloud providers, which must manage far more users and greater performance demands than do enterprises. While the average user of an enterprise system demands high performance, these systems typically have fewer users, and those users can access their files directly through the network.
Check out the full post, Data Center Yin and Yang: Reduce Costs and Increase Performance, from Data Center Journal.