I haven't tried AHCI because I have VMs on another RAID 1 array with the disks in the 3rd and 4th slots.
My assumption after many failed attempts is that local RDM doesn't work with a logical drive in RAID 1 (at least not on the HP Micrsoserver) and only works with separate physical disks, but if others have got it working with RAID then i'm doing something wrong.
Just to clarify I can create the XPEnology VM if I attach a non-RDM vmdk, so its just the RDM part which is at fault. Not sure why but my logical drive ID doesn't start with t10 as VMware state in their article. It is naa.600508b1001cdefb6195fe83fcc3d0a6.
So the command that i used is :
vmkfstools -z /vmfs/devices/disks/naa.600508b1001cdefb6195fe83fcc3d0a6 "/vmfs/volumes/3TB RAID/RDM/3TB.vmdk"
by browsing the datastore I can see that it does create the file. To me this means the problem must lie when I add the RDM vmdk to the VM or a BIOS setting.
When I add the existing datastore, I have tried the VMware Paravirtual SCSI controller and LSI Logic Parallel one. virtual device node SCSI 0:0, 1:0 and have left the mode independent unchecked. There seems to be conflicting guides on the internet showing different SCSI controllers and device nodes. Which parameters should be used?
Thanks,
Naysan