A customer has a UNIX-based 25 TB Oracle/SAP instance currently running on an HP 12000 Enterprise
Storage array. The database is very sensitive to response times and is reported to have a peak I/O
requirement of over 25,000 I/O per second. The HP device is nearly three years old, and the customer is
considering replacing it.
Which of the following is the best way to investigate the IBM DS8000 as a suitable technology replacement for
the HP 12000 device?

A.
Ask the customer on what basis HP sized the HP 12000 Storage Array originally, and make an assessment
from that information.

B.
Use the Internet to find out the capabilities of an HP 12000 Storage Array and configure an equivalent IBM
D58800.

C.
Ask the customer for IOSTAT output from the server or servers and use it as an input to a Disk Magic
model.

D.
Ask the customer if they can estimate the workload characteristics.