E20-326 Question #214: Real Exam Question with Answer & Explanation

You are designing the Symmetrix VMAX architecture for a DAS-to-SAN SQL Server migration. Currently all user databases reside on a single locally-attached disk enclosure, mounted to "M:". You have decided on RAID-1 protected 15,000 RPM drives for the new SQL environment. Last week, you configured Perfmon to record the current IOPS load as shown in the exhibit. Following EMC best practices, what is the minimum number of spindles required to satisfy the performance needs of the database?