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in my server I have PCI RAID Controller PERC 6i, it has two cables connected to SAS Backplane. one is mentioned with CTRL 1 (connected to J_SAS_A), and the other CTRL 0 (connected to J_SAS_B).

The disks are connected to SAS Backplane. The SAS Backplane get its power from Power Supply. SAS Backplane has J_PLANAR_BMC cable connected to the Motherboard.

My question is, does the data on the disks transfer to the motherboard through RAID Controller PCI, or through J_PLANAR_BMC connector?

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  • What kind of server is this? PowerEdge T 410? – Nils Dec 21 '18 at 13:43
  • Yes it is PowerEdge T410 – Mohammed Hashim Dec 21 '18 at 16:42
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Through the RAID controller. The BMC is just a management interface.

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  • Thank you for your response. So does this mean if I plug 6x HDDs 6Gb/s to the backplane, the total throughput will be only 6Gb/s as this is the speed of the controller ? – Mohammed Hashim Dec 19 '18 at 5:57

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