As simple and Quick:- 1. Controller slot. 2. SAS cable. 3. backplane, noting else can cause the issue.
Hello, I've gotten a second-hand R730xd that doesn't recognize more than the first 8 disks (numbered 0-7) installed in front on the front backplane.  Two disks installed on the rear backplane are detected fine as Disk 24 and Disk 25. When I install additional disks, I don't even get a power light.  Nothing gets detected in idrac either.  The system is cabled as the "Option 1" setup according to the manual.  I have also tried 2 different mini PERC controllers, so the controller is not the issue.  All BIOS is at the latest versions available. Here are pictures of my cabling: [IMAGE][IMAGE]   Here's a screen shot of my idrac backplane slot summary, even though I have disks (and I have tried many) installed in slot 8 and 9... [IMAGE]  and here is the backplane info from hardware inventory. [IMAGE]  Any ideas on what is going wrong? Thanks for any assistance.
PowerEdge R730xd doesn't see more than 8 disks on front backplane