What are three common reasons why customers are saying that they need to evolve their data center? （）

• A、demand among users for access to information anytime, anywhere
• B、desire to use the same vender for desktop and server deployments
• C、existing equipment has reached and of life
• D、increasing operational costs of managing data centers
• E、architectures that is inflexible and inefficient
• F、selecting best-performing vendors for each individual component