2V0-21.20 · Question #130
Which two features are only supported by VMFS6 datastores? (Choose two.)
The correct answer is D. 4K native storage devices E. Automatic space reclamation. VMFS6 was introduced in vSphere 6.5 and added two capabilities not present in VMFS5: D - Support for 4K native storage devices. Older VMFS versions required 512-byte or 512e (emulated) sector drives; VMFS6 natively supports drives with 4096-byte physical sectors, which are…
Question
Which two features are only supported by VMFS6 datastores? (Choose two.)
Options
- AConcurrent access to shared storage
- BOn-disk locking
- CDynamic expansion
- D4K native storage devices
- EAutomatic space reclamation
How the community answered
(35 responses)- A3% (1)
- C3% (1)
- D94% (33)
Explanation
VMFS6 was introduced in vSphere 6.5 and added two capabilities not present in VMFS5: D - Support for 4K native storage devices. Older VMFS versions required 512-byte or 512e (emulated) sector drives; VMFS6 natively supports drives with 4096-byte physical sectors, which are common in modern high-capacity disks. E - Automatic space reclamation (automatic UNMAP). When VMs delete data inside guest OSes, VMFS6 can automatically send UNMAP/TRIM commands to the underlying storage array to reclaim the freed blocks. VMFS5 required manual or scheduled UNMAP operations. Options A (concurrent shared access), B (on-disk locking), and C (dynamic expansion) are features present in both VMFS5 and VMFS6, so they are not exclusive to VMFS6.
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