Question We install SATA 6Gb 12 pcs in to the configuration below. But only 11pcs HDD can be recognized. How to make all 12 pcs HDD being recognized? CHASSIS : CSE-826E1-R800LPB BACKPLANE : BPN-SAS-826EL1 M/B : X8SIL-F RAID CARD : Adaptec ASR-5445 (FW 18252) HDD : SATA 6Gb/s Hitachi HUA723020ALA640 *12pcs Answer BPN-SAS-826EL1 is 3Gb/s SAS1 expander backplane. SAS1 backplane is not able to support SATA 6Gbps (SATA3) or SAS2 hard drives. Please upgrade to SAS2 backplane. Was this FAQ helpful? YES      NO Enter Comments Below: Note: Your comments/feedback should be limited to this FAQ only. For technical support, please send an email to support@supermicro.com.  Enter your email address below if you'd like technical support staff to reply:  Please type the Captcha (no space) L P Q N FAQ Stats FAQ ID Related Category / Keyword Date Posted Code 15543 N/A 01/31/13     Print Answer