When creating a RAID 5 RAID Group from SAS disks, EMC best practice recommends selecting
drives from the same bus.
Why?
A.
There is little, if any, performance increase from using multiple busses.
B.
Hot spares are always chosen from the same bus as the majority of disks in the RAID Group.
C.
There is a slight decrease in performance when using multiple busses.
D.
Only RAID 1/0 groups can be created across multiple busses.