You work as the exchange administrator at TestKing.com. The TestKing.com network contains an Exchange Server 2010 Organization. TestKing.com makes use of Microsoft Exchange Server messagingsolution. During the course of day you receive an instruction from the CIO to deploy a database availability group（DAG） within the organization. You thus decide to recommend disk configuration for the servers in the organization whilst keeping the costs to a minimum. What should you do？（）
- AYou should recommend 15000 RPM SAS hard disks in a Fiber Channel（FC）Storage Area Network（SAN）.
- BYou should recommend 7200 RPM SATA hard disks in a direct Attach Storage （DAS）.
- CYou should recommend 15000 RPM SAS hard disks in a Network Attached Storage （NAS）.
- DYou should recommend 7200 RPM SATA hard disks in a Network Attached Storage （NAS）.