VMware ESXi 5 is not able to handle multi-lun devices by default, so many SCSI autoloaders are not supported as-is (as HP StorageWorks LTOs), showing only the tape drive or media changer but not both:
To have it work in ESXi it’s enough to:
- Get a multi-LUN aware SCSI controller. Notice that many RAID controllers can’t handle multi-lun targets. I’ve used an Adaptec 29320.
- Run the following on ESXi: esxcli storage nmp satp rule add --satp VMWSATPLOCAL --driver="aic79xx" --description="Specific rule for Adaptec Card"
- Issue a bus rescan
After that you should be able to see both the tape and the autoloader, as show in the following image: