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Right now I have a HP ProLiant DL360p Gen8 with two SATA disks in the disk bays. These are the OS disks. I choose SATA disks to bypass the internal raid controller, so ZFS could do the raid.

I now need a 2U host, and would like to use SAS disks instead of SATA disks for the OS. Looking at pictures of opened HP hosts, I can only see one SATA cable going to the mainboard, where I was hoping to see one from each disk bay, as it then would be more likely that I can completely bypass the onboard controller.

So my question is

Can I just buy a LSI SAS 9207-8i, and connect the disk bays directly to that controller? Or do I need a specific HP host to do that?

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Yes you can install an LSI PCIe controller in an HP server.

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You disconnect the internal SAS cables from the motherboard ports and connect them to the add-in HBA(s).

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  • Great. Do you know if each disk bay have their own SATA cable, or should I only expect to find one SATA cable from all the disk bays? – Jasmine Lognnes Oct 13 '15 at 14:18
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    Each group of 4 disks on the backplane has a SAS SFF 8087 port. So for 4 disks, you would use one connector. For up to 8 disks, you would use 2 connectors. The "8i" in 9207-8i means it accommodates 8 disks using two 4-lane ports. – ewwhite Oct 13 '15 at 14:22

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