Yes, it's completely secure, which ever Hypervisor you use.
The DS team has a good blog entry on it here: (also look for part 2)
Veeam® is happy to provide the Microsoft community with a study guide prepared by MVP and MCT, Orin Thomas. This guide will take you through each of the exam objectives, helping you to prepare for and pass the examination.
Teach the user how to rename, unmount, delete and upgrade VMFS datastores.
Open vSphere Web Client: Rename VMFS and NFS datastores: Upgrade VMFS-3 volume to VMFS-5: Unmount VMFS datastore: Delete a VMFS datastore:
Teach the user how to convert virtaul disk file formats and how to rename virtual machine files on datastores.
Open vSphere Web Client: Review VM disk settings: Migrate VM to new datastore with a thick provisioned (lazy zeroed) disk format: Rename a…