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A customer is deploying an Exchange 2010 environment on an EMC VNX. There will be 30,000
mailboxes distributed across mailbox servers within a DAG (database availability group) that
maintains three database copies. Each user sends approximately 350 messages per day. The
customer wants to use 600 GB 15K drives in a RAID 5 group. How many spindles are needed to
support the performance required for this Exchange environment?

A.
197

B.
132

C.
158

D.
175