Click on the calculator icon in the upper left corner. A customer would like to add a new database
application to their VMAX. This application is expected to produce 3000 I/O per second with 45%
read hit and 25% write. The customer expects to use RAID 5 (3+1) on new drives that are not yet
utilized. These drives perform 100 SCSI commands per second (read/writes) at 100% utilization.
Assuming drive utilization should not exceed 70%, how many physical drives, excluding hot
spares, does the customer need to achieve performance requirements?

A.
56 disks

B.
48 disks

C.
32 disks

D.
68 disks

Explanation: