Which IBM tool can be utilized to determine if Real-time Compression can help in an IBM SAN Volume
Controller or IBM Storwize V7000 environment to reduce storage acquisition costs?

A.
Comprestimator

B.
Disk Magic

C.
STAT

D.
Capacity Magic

Explanation:
http://www.redbooks.ibm.com/redpapers/pdfs/redp5031.pdf (p.67)