Adding Disks to Your ESXi VM¶
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Open your virtual machine configuration page by clicking Virtual Machines and selecting your VM from the list.
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On your virtual machine configuration page, click Edit. In the Edit Settings window, click Add Hard Disk and select New standard hard disk or Existing hard disk.

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If you have selected New standard hard disk, a New Hard Disk category will appear in the list settings.
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Expand the category and make sure that Disk Provisioning is set to Thick-provisioned, lazily zeroed.
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Specify the amount of storage space to allocate to your new hard disk and proceed to Step 3.
Restriction
Volumes larger than 1.98 TB are not supported on VSI OpenVMS.
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If you have selected Existing hard disk, a pop-up window will open where you can select a hard disk that you wish to use with your VM.
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Locate a hard disk that is not used by any other virtual machine.
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Click Save and proceed to Step 3.
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Assign the appropriate controller to the disk using the drop-down menu in the Controller location field. Match the controller type to the OpenVMS recommendations for your release and your environment needs.
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Click Save.
Tip
ESXi supports exclusively VMDK disks. To learn how to convert a different-format disk into .vmdk, refer to the Converting Hypervisor Images article.