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I have a HP Proliant DL360 G9 (with P440ar storage controller). I would like to know whether it is possible to connect NVMe U.2 SSD? The SSD I was thinking about is Samsung 983 DCT.

I'm not sure how to determine whether the controller supports U.2. It only specifies that it supports SAS/SATA, and that is has a PCI Express Gen3 x 8 link.

Another thing - does the controller determine the backplane connectors? Or are those two separate items?

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    You may have an issue with the controller accepting a non HP storage device. Even if HP uses the same basic hardware, the firmware may unique and the controller will require HP firmware to function with that storage device – Dave M Jun 4 '19 at 12:03
  • Do you need to use U.2 drives? That requires the NVMe enablement kit for the HPE server. – ewwhite Jun 4 '19 at 13:40
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The HPE Proliant DL360 gen9 will accept NVMe devices with the addition of an HPE DL360 Gen9 NVMe 2 Solid State Drive Express Bay Enablement Kit (p/n 764628-B21) or the HPE DL360 Gen9 6 NVMe + 4 SAS/SATA Express Bay Enablement Kit (p/n 817676-B21). This provides support for up to 2 or 6 NVMe SFF drives (HPE reference).

At time of writing there are currently eight HPE NVMe parts listed as compatible with this server, for instance the HPE 2TB NVMe x4 Lanes Read Intensive SFF (2.5in) SCN SSD (p/n 877986-B21). These are described as having interface "NVMe" with no mention of U.2 or any other established physical interface. I interpret this to mean that the interface with the server is via the enablement kit which is a PCI x4 3.0 card. This is not U.2 and I can see no evidence that the gen9 supports U.2.

I would suggest that NVMe using an add-in card (AIC) would be a good option. Any standards-based PCI AIC could be used.

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