What is a key advantage of the IBM TS4500?

A scientific customer is evaluating the IBM TS4500 against the Spectra Logic or Quantum Scalar i6000 and suggests that there is no difference since these vendors use IBM manufactured drives in their libraries.

What is a key advantage of the IBM TS4500?
A . Faster move time for tape mounts
B . Vendor agnostic media reporting
C . Modular frames for expansion
D . Standard 19 rack form factor

Answer: A

Explanation:

https://www.ibm.com/us-en/marketplace/ts4500