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Converting VirtualBox VDI (Virtual Disk Image) to VMDK for use with ESXi 8.x

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If you are converting an Oracle VirtualBox VDI (Virtual Disk Image) to a VMDK for use with VMware ESXi, you might come across the following error:

Unsupported or invalid disk type 2 for 'scsi0:0'. Ensure that the disk has been imported


The invalid disk type 2 is typically a giveaway that the VMDK was mostly likely converted to a format that is only understood by a VMware Type 2 Hypervisor (Fusion/Workstation/Player) rather than ESXi which is a VMware Type 1 bare-metal Hypervisor.

Luckily, there is a straight forward way to convert the existing VMDK into the format that ESXi understands!

Note: While VirtualBox does offer an export appliance option which produces an OVA (Open Virtualization Archive), it fails to properly import into a VMware environment 🙁 and hence the need to work directly with the VDI images.

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Quick Tip - How to monitor when ESXi filesystem and partitions are filling up?

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Here is another tidbit on how you can leverage the power of vSphere Events, which now includes over 2K+ as of vSphere 8.0 Update 1 to help monitor when an ESXi filesystem and/or partition is low on disk space.

With vSphere 6.7 or later, we have two events that you can use to help alert when either an ESXi ramdisk (e.g. /var) or VFAT partition (e.g. bootbanks) has filled up.

  • Ramdisk: esx.problem.visorfs.ramdisk.full
  • VFAT: esx.problem.vfat.filesystem.full.other

When either of these occur, you can easily find them under the Monitor->Events section for an ESXi host as shown in the screenshot below.

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DDR5 SODIMM capable kits for ESXi

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After successfully confirming the new non-binary 48GB DDR5 SODIMM modules (96GB total) is fully functional with any DDR5 capable system, I started receiving questions about which DDR5 kits are currently available today and that can also be used with ESXi?

The ASUS PN64-E1 is definitely a top contender for anyone in the market for a new or updated VMware Homelab and it was also the system that I had used to verify the new DDR5 memory. In addition to the PN64-E1, the following kits listed below from my research also supports DDR5 SODIMM memory and would also be compatible with ESXi.

Note: While there are other DDR5 kits out in the market, especially those with an AMD CPU, they are not viable with ESXi as the onboard networking uses a Realtek network adapter and there are no ESXi drivers from Realtek.

If folks are aware of other kits that are both DDR5 compatible and would also function with ESXi, feel free to share by leaving a comment below.

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