Adding optional drive back plane DL360 G7

I have a Proliant DL360 G7 server. I added an optional drive expansion back plane to accommodate more drives. I removed the CD ROM. When I boot up on the smart start cd to configure my drives, I only see 4 x drives which are in the primary back plane. I have a P410i controller. Why can I not see my other drives. When I hold down the power button, all drives flash. I have 146GB SAS drives.
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Did you connect the new backplane to the P410i controller?
InSearchOfAuthor Commented:
I connected the backplane cable to a connector on the motherboard just like the primary backplane. The connectors were side by side on the mother board.
andyalderSaggar maker's framemakerCommented:
power cable ?
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InSearchOfAuthor Commented:
Power cable is in place. As I mentioned when I hold down the power button, all eight drive's led flash.
andyalderSaggar maker's framemakerCommented:
Sounds like the SAS cable isn't clicked in properly, The disk lights are on the backplane and flash when the LED driver chip on the backplane initializes, they flash whether a disk is in the slot or not and if I remember correctly they also flash if the SAS cable isn't connected. these LEDs are turned on and off via the sideband wires rather than data wires within the cable so it's even possible that you will see them flash if the disk is pushed in without operating the handle since the perspex light-pipes would still be aligned.
InSearchOfAuthor Commented:
Let me check.
InSearchOfAuthor Commented:
cable is good.
andyalderSaggar maker's framemakerCommented:
Prove the backplane works by swapping cables and disks between the two backplanes (not much to go wrong with the backplane, it's just copper and plastic).

You can upload an adureport from the ACU/ADU/SSA and I'll look to see if there is anything there, but unlikely to show anything.

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InSearchOfAuthor Commented:
Thanks for all the help
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