NVMe drives dosnt recognized as OS

Hello,

The Dell PERC H965i Front controller does support NVMe drives, but with important limitations and behavior differences compared to native NVMe or HBA configurations.

The PERC H965i supports NVMe drives via PCIe lanes.

However, NVMe drives attached to the PERC controller are presented to the OS as SCSI devices, not as native NVMe devices.

This means tools like nvme-cli will not detect or manage these drives, and they will appear as /dev/sd* instead of /dev/nvme*.

Unfortunately, PERC H965i does not support true pass-through (HBA) mode for NVMe drives. This is a known limitation:

NVMe drives are always abstracted through the RAID controller.

There is no BIOS or controller setting to enable NVMe pass-through or HBA mode on this controller 

Dell PERC13 and PERC12 User’s Guide PERC H975 Series and PERC H965 Series cards:

https://www.dell.com/support/manuals/en-us/perc-h965i-adapter/perc12/non-volatile-memory-express?guid=guid-d3c1a616-36a4-4d53-9bbc-1a1a9fb19e25

You may try creating a RAID0 of each individual drive and see if that works for you.