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