ABC.com has requested that you provide the number of physical disks required to support its
Microsoft Exchange 2007 Storage Groups. The company has 12,500 users each with an average
workload of 1.2 IOPS. At peak activity, up to 10,000 users could be logged in to Exchange.
What other information is required to accurately calculate the number of required disk spindles to
meet the user IOPS requirements?

A.
Public folders location and deleted item retention period

B.
Size of user mailbox, RAID type, and disk speed

C.
Size of user mailbox, read penalty, and RAID type

D.
Read/write ratio and write penalty