2V0-15.25 · Question #10
An administrator recently deployed a new three-node VMware vSAN Express Storage Architecture (ESA) cluster to an existing workload domain. After creating a number of Virtual Machines (VMs), the…
The correct answer is B. The vSAN ESA cluster must have a minimum of four hosts. In vSAN Express Storage Architecture (ESA), Auto-Policy Management determines which default storage policies can be used based on the number of hosts in the cluster. RAID-5 and RAID-6 policies require a minimum number of hosts to satisfy fault domain and component placement For…
Question
An administrator recently deployed a new three-node VMware vSAN Express Storage Architecture (ESA) cluster to an existing workload domain. After creating a number of Virtual Machines (VMs), the administrator discovers that storage is being consumed a lot quicker than expected. While investigating the issue, the administrator discovers that the datastore default policy has been set to RAID-1 by Auto-Policy Management rather than the expected RAID-5. What is a possible cause?
Options
- AThe RAID-5 policy is only supported on a vSAN ESA storage cluster.
- BThe vSAN ESA cluster must have a minimum of four hosts.
- CThe vSAN storage policy has Force Provisioning enabled.
- DThe vSAN ESA cluster has Host Rebuild Reserved enabled.
How the community answered
(32 responses)- A6% (2)
- B81% (26)
- C9% (3)
- D3% (1)
Explanation
In vSAN Express Storage Architecture (ESA), Auto-Policy Management determines which default storage policies can be used based on the number of hosts in the cluster. RAID-5 and RAID-6 policies require a minimum number of hosts to satisfy fault domain and component placement For vSAN ESA, the minimum hosts required are: RAID-1 (FTT=1) minimum 3 hosts RAID-5 (FTT=1) minimum 4 hosts RAID-6 (FTT=2) minimum 6 hosts In this scenario, the administrator deployed a three-host ESA cluster. Since RAID-5 requires at least four ESA-capable hosts, vSAN Auto-Policy Management automatically falls back to RAID-1, the highest level of resilience possible with the available cluster size. This results in significantly higher storage consumption, which matches exactly what the administrator observed.
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