2V0-21.23 Question 82
Select 3A VMware administrator is designing a new vSAN 8 cluster and wants to take full advantage of the Express Storage Architecture (ESA). Which of the following statements correctly describe key concepts of ESA and its benefits?
- A
ESA uses a single-tier storage architecture that eliminates the need for a caching tier.
- B
ESA requires specific hardware to unlock its performance and efficiency benefits.
- C
ESA leverages disk groups to manage storage devices, just like the Original Storage Architecture (OSA).
- D
ESA supports higher levels of compression and encryption compared to the Original Storage Architecture (OSA).
- E
ESA is compatible with all existing vSAN 7.0 clusters without requiring hardware upgrades.
Show answer and explanation
Correct answers: A, B, D
Explanation
The Express Storage Architecture (ESA) in vSAN 8 is designed to optimize performance and efficiency by introducing a single-tier architecture that eliminates the need for caching tiers, requiring specific hardware (e.g., NVMe devices). Additionally, ESA enhances storage efficiency through improved data services like compression and encryption. However, it is not backward compatible with all existing vSAN clusters, as hardware upgrades may be required.
- A. Correct.
Correct. ESA uses a single-tier storage architecture where all storage devices contribute directly to performance and capacity, making a separate caching tier unnecessary.
- B. Correct.
Correct. ESA requires hardware that meets specific requirements, such as NVMe-based devices, to achieve its performance and efficiency improvements.
- C. Incorrect.
Incorrect. ESA replaces the concept of disk groups used in the Original Storage Architecture (OSA) with a more flexible architecture that does not rely on predefined groupings of storage devices.
- D. Correct.
Correct. ESA introduces enhanced data services such as improved compression and encryption, offering better storage efficiency and security compared to OSA.
- E. Incorrect.
Incorrect. ESA is not compatible with all existing vSAN 7.0 clusters, as it requires specific hardware to function. Upgrades may be necessary for older clusters.