How many disks are required to meet both the application’s capacity and performance requiremen

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