What supports the Easy Tier function for an S822?

A.
(8) drives with a split backplane

B.
(12) drives with a split backplane

C.
(8) drives with a second SAS controller

D.
(12) drives without split backplane

Explanation:

Reference:
http://www-01.ibm.com/common/ssi/cgibin/ssialias?infotype=an&subtype=ca&appname=gpateam&supplier=897&letternum=ENUS114-
061