What impact can obsolete drive firmware have on an Isilon cluster?

A. Reduces administrative overhead and increases performance.
B. Affects redundancy settings and FEC coding.

C. Affects cluster performance or hardware reliability.

D. Increases runtime and cluster performance.

Reference: http://doc.isilon.com/onefs/7.2.0/help/en-us/GUID-398C2422-1CA5-4AE0-8F3D-09F589C82E6E.html