An application requires 1.46 TB of capacity. The application generates 7200 IOPS to disks during
peak workloads. The vendor indicates that a 146 GB, 15K rpm drive is capable of performing a
maximum of 180 IOPS at 70% utilization.
How many disks are required to meet both the application’s capacity and performance
requirements?

A.
10

B.
40

C.
50

D.
72

Explanation:
Storage Design based on Application Requirements and Disk Drive Performance

Calculation
Dc = 1.46TB / 146GB
= 1460 / 146
= 10
= 10 Drives
Dp = 7200 iops / 180 iops
= 40
= 40 Drives
Disk required = max(Dc,Dp)
= max(10,40)
= 40
EMC E10-001 Student Resource Guide. Module 2: Data Center Environment