VMware Cloud Director
In alignment with vCenter's shared disk requirements, a thick-provisioned disk is necessary for shared named disks. However, vSAN allows a thin-provisioned shared disk to function similarly.
VCD includes a configuration, 'vcloud.disk.shared.eagerZero', which determines the provisioning method for a shared named disk. Setting the value of 'vcloud.disk.shared.eagerZero' to 'true' creates a thick-provisioned disk, while 'false' results in a thin-provisioned disk.
Note: The mentioned configuration is at the system level in VCD, meaning the behavior remains consistent across all tenants and storage policies. It is advised to choose vSAN backed storage policy to create thin provisioned shared named disks.