When you need to save storage space, you can create a virtual disk in thin provisioned format. The thin provisioned virtual disk starts small and grows as more disk space is required.

This procedure assumes that you are creating a typical or custom virtual machine using the New Virtual Machine wizard.

You can create thin disks only on the datastores that support disk-level thin provisioning.

In the Create a Disk dialog box, select Thin Provision.

A virtual disk in thin format is created.

If you created a virtual disk in the thin format, you can later inflate it to its full size.