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 two mailbox servers that willbe members of the database availability group （DAG）. You are instructed to recommend a hard disk configuration for the deployed servers. However， you need to ensure that write performance is reduces aswell as stopping a switchover in the event of a single disk failure. What should you do？（）

• A、This can be accomplished by recommending RAID1 array.
• B、This can be accomplished by recommending RAID10 array.
• C、This can be accomplished by recommending RAID0.
• D、This can be accomplished by recommending RAID 5 array.