Question

An application specifies a requirement of 200 gb to host a database and other files. it also specifies that the storage environment should support 5,000 iops during its peak processing cycle. the disks available for configuration provide 66 gb of usable capacity, and the manufacturer specifies that they can support a maximum of 140 iops. the application is response time sensitive and disk utilization beyond 60 percent will not meet the response time requirements of the application. compute and explain the theoretical basis for the minimum number of disks that should be configured to meet the requirements of the application. 6 .

Answer 1

Number of disk required = max (size requirement, IOPS requirements)  

To meet the size requirement = 200 GB/66 GB= 4 disks  

To meet the IOPS requirement= 5000 IOPS/(140x0.6 IOPS)= 60 disks  

= max (4, 60) = 60 disks