For ESXi 6 on HP DL 380 Gen 9 servers (controller p440 ar) and VSAN, if local drives do not show up under storage on ESXi which I am sure will not
Download the driver "scsi-hpsa-5.5.0.106-1OEM.550.0.0.1331820.x86_64.man" from
copy it to the path /var/log/VMware and install using the instructions in the link above.
Then go to HP SSA under intelligent provisioning and create RAID across each drive (SSD and HDD) individually.
Disks should show up now and enable vsan