2V0-622 · Question #416
What two enhancements are in VMFS6 but not in VMFS5? (Choose two.)
The correct answer is A. Support for 4k native disks D. Automatic space reclamation. VMFS6 introduced two capabilities absent from VMFS5: native 4K (4Kn) disk support and automatic space reclamation via UNMAP.
Question
What two enhancements are in VMFS6 but not in VMFS5? (Choose two.)
Exhibit
Options
- ASupport for 4k native disks
- BSupport for 512e disks
- CGPT storage device partitioning
- DAutomatic space reclamation
How the community answered
(52 responses)- A88% (46)
- B8% (4)
- C4% (2)
Why each option
VMFS6 introduced two capabilities absent from VMFS5: native 4K (4Kn) disk support and automatic space reclamation via UNMAP.
VMFS6 added support for 4K native (4Kn) drives, which use a 4096-byte physical sector size; VMFS5 only supported 512-byte and 512e drives and could not address 4Kn devices at all.
512e (512-byte emulated) disk support was already present in VMFS5, so it is not a new VMFS6 enhancement.
GPT (GUID Partition Table) partitioning for storage devices was already used by VMFS5 for datastores on devices larger than 2 TB, making it not exclusive to VMFS6.
VMFS6 introduced automatic background UNMAP, which continuously reclaims deleted blocks and returns them to the storage array without manual intervention; VMFS5 required a manual esxcli UNMAP command and had no automatic reclamation.
Concept tested: VMFS6 new features - 4Kn disk support and automatic UNMAP
Source: https://docs.vmware.com/en/VMware-vSphere/6.5/com.vmware.vsphere.storage.doc/GUID-CF57C5DF-F823-41B5-9827-C3E9D54E56C0.html
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