An Administrator would like to take advantage of the new Automatic UNMAP feature in VMFS6. All of the
existing datastores are connected via iSCSI and formatted with VMFS5.
In order to minimize disruption and maintain some of the existing VMFS5 volumes, which two steps can be
taken to leverage the UNMAP feature in VMFS6? (Choose two.)
A.
Use Storage vMotion to migrate your workloads to the new VMFS6 datastore.
B.
Create a new VMFS6 datastore.
C.
Use Storage DRS to put the VMFS5 datastore into maintenance mode.
D.
Perform an inline upgrade on each of your VMFS5 volumes.
Explanation:
https://kb.vmware.com/selfservice/microsites/search.do?
language=en_US&cmd=displayKC&externalId=2147824
A & B.
https://kb.vmware.com/s/article/2147824
VMFS 5 and VMFS 6 can coexist. However, due to the changes done in VMFS 6 metadata structures to make it 4K aligned, you cannot inline/offline upgrade from VMFS5 to VMFS6.
You can leverage the new VMFS 6 capabilities by creating a new VMFS 6 datastore and provisioning new virtual machines to it or migrating the existing virtual machines from VMFS 5 datastore to VMFS 6 datastore.
Note: PowerCLI cmdlet “Update-VmfsDatastore” can be used to update datastore from VMFS 5 to VMFS 6.
For more details and limitations on this cmdlet please refer to PowerCLI version 6.5.4 documentation.