1.Case Scenario

An organization plans to deploy a new business application:

Required storage capacity = 1.5 TB

Peak I/O workload = 5200 IOPS

Typical I/O size = 4 KB

Specifications of the available disk drive option:

RPM = 15,000

Storage capacity = 250 GB

Average seek time = 4.2 ms

Data transfer rate = 80 MB/s

Requirement:

The application is business critical and must have an acceptable response time

Deliverable:

Calculate the number of disk drives required for the application