You have an Exchange Server 2010 organization. You plan to deploy two new Mailbox servers.  Both Mailbox servers will be members of a database availability group （DAG）. You need to recommend a hard-disk configuration for the new servers. Your recommendation must meet the following requirements： .Maximize write performance .Prevent a switchover if a single disk fails Which disk configuration should you recommend？（）

• A、RAID 0 array
• B、RAID 1 array
• C、RAID 5 array
• D、RAID 10 array