Addi1981 Posted March 23, 2020 Share #1 Posted March 23, 2020 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. Regards. Quote Link to comment Share on other sites More sharing options...
Addi1981 Posted March 23, 2020 Author Share #2 Posted March 23, 2020 Any idea? Quote Link to comment Share on other sites More sharing options...
Addi1981 Posted March 24, 2020 Author Share #3 Posted March 24, 2020 Heeeellp Pleaseee Quote Link to comment Share on other sites More sharing options...
luchuma Posted March 24, 2020 Share #4 Posted March 24, 2020 change scsi to sata Quote Link to comment Share on other sites More sharing options...
Addi1981 Posted March 24, 2020 Author Share #5 Posted March 24, 2020 I tried it already, doesn't seem to help. Quote Link to comment Share on other sites More sharing options...
luchuma Posted March 24, 2020 Share #6 Posted March 24, 2020 (edited) how many datastores and phisical disks do you have currently on esxi? Edited March 24, 2020 by luchuma Quote Link to comment Share on other sites More sharing options...
Addi1981 Posted March 24, 2020 Author Share #7 Posted March 24, 2020 (edited) Hi, 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 March 24, 2020 by Addi1981 Quote Link to comment Share on other sites More sharing options...
luchuma Posted March 24, 2020 Share #8 Posted March 24, 2020 to use rdm you need to delete datastore on that hdd Quote Link to comment Share on other sites More sharing options...
Addi1981 Posted March 24, 2020 Author Share #9 Posted March 24, 2020 Hi luchuma, actually your proposal did the trick. After removing the datastore it is finally working. Big thx for that. Quote Link to comment Share on other sites More sharing options...
byallmeans Posted October 3, 2021 Share #10 Posted October 3, 2021 Hi all, Hoping someone could assist me with RDM related issue. Apologies for replying to an old thread, just looks somewhat relevant. I've been using xpenology DSM 5.2 for a long time and decided to upgrade to 6.2 using the following tutorial and ovf file: https://advanxer.com/blog/2018/12/install-xpenology-dsm-6-2-1-on-esxi-6-7-ready-made-ova-file/ DSM appears to be working fine (though the fact one of its disks has been assigned with 200GB of storage baffles me). The issue is that I can't seem to get my existing RDM(s) to work with it. Works fine with the old DSM 5.2, though. Tried both SCSI and SATA controllers. When using the former - DSM 6.2 will not even boot. Any help would be greatly appreciated, Val Quote Link to comment Share on other sites More sharing options...
byallmeans Posted October 3, 2021 Share #11 Posted October 3, 2021 Right, it looks like it worked with "SATA controller 1" so I'm guessing "0" cannot be used for the attached storage if the system "50MB" disk is using it? Question then, "Hard disk 1" (200GB) as per screenshot above uses "SATA controller 1", is it possible (or smart) to add the two storage disks to the same controller and have them in 'raid 1' but don't include the 200GB drive in the same raid setup? Thanks a lot in advance, Val Quote Link to comment Share on other sites More sharing options...
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