I have
24x drive 4U case with 4U Expander Backplane http://www.supermicro.com/products/chassis/4u/846/sc846e16-r1200.cfm
MegaRAID SAS 9260-4i RAID Card http://www.lsi.com/channel/products/storagecomponents/Pages/MegaRAIDSAS9260-4i.aspx
One sff-8087 to sff-8087 cable
The question is can 24 drives run of this RAID card and single cable via the expander backplane optimaly or do I need to invest in a more expensive RAID card such as LSI MegaRAID SAS 9280-4I4E