Dell T30 - ESXI 6.7 - DSM 6.2 - RDM issues

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Hi all,

I am currently running ESXI 6.7 from usb drive.

My VM's are stored on a M2-SSD. In addition there is a 3.5 Disk installed.

So far the setup is fine and XPENOLOGY is booting up ok.


Now I would like to pass the 3.5 Hard drive via RDM to the virtual machine.

I do have two datastores atm, VM_Store which is the M2 drive and VM_Store_HDD which is the 3.5 hard drive.


I have created the RDM via vmkfstools -z /vmfs/devices/disks/t10.ATA_____ST1000DM0102D2EP102__________________________________W9AFSYJ0 "/vmfs/volumes/VM_Store_HDD/RDM-VM-1TB.vmdk"


Editing the virtual machine and adding the RDM-VM-1TB.vmdk stored in the VM_Store_HDD datastore, I always get the following error.

"Failed to reconfigure virtual machine XPENOLOGY_VM01. Incompatible device backing specified for device '6'. - dismiss"


The configuration of the VM I have attached as a JPG.


Help would be really appreciated.





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Posted (edited)


there is

1 x  USB pan drive

1 x CD-ROM

1 x NVMe SSD   in Datastore VM_Store

1 x 1TB Hard drive in Datastore VM_Store_HDD


So it is two physical disks in two seperate stores.





Big thx for your support.


Edited by Addi1981
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