Which NetApp Virtual Storage Tier component works aggregate-wide on a FAS controller?

A.
Flash I/O
B.
Flash Cache
C.
Flash Accel
D.
Flash Disk
E.
Flash Pool
Explanation:
https://communities.netapp.com/docs/DOC-19016 (first bulleted point on the page)
I believe the correct answer is actually E: Flash Pool and not B: Flash Cache (which is actually controller- or node-wide or per controller cache).
0
0
C
http://community.netapp.com/t5/Tech-OnTap-Articles/New-VST-Levels-Let-You-Further-Optimize-Flash-Use-for-Performance-and-Cost/ta-p/86936
0
0
actually make that B
0
0