The current block size of a data store in VMFS3 is 4MB. An administrator needs to upgrade the data store to VMFS5 and wants to change it to IMB block size. Which action should the administrator take?
1. Create a new VMFSS data store with a IMB block size. 2. Migrate all virtual machines from the existing data store to the new data store, then delete the VMFS3 data store_