2V0-21.23 Question 152
Select 4An organization is planning a new VMware vSphere environment to consolidate workloads from several physical servers. The architect has determined that the new environment will use VMware ESXi hosts connected to shared storage, and vSphere High Availability (HA) will be enabled. Which of the following considerations should be included in the design to support vSphere HA functionality?
- A
Ensure that all ESXi hosts are part of the same vSphere cluster.
- B
Enable vSphere Fault Tolerance for all virtual machines in the cluster.
- C
Configure a dedicated management network with redundant network adapters for HA communication.
- D
Ensure that shared storage is accessible by all ESXi hosts in the cluster.
- E
Set up an admission control policy to reserve resources for HA failover.
Show answer and explanation
Correct answers: A, C, D, E
Explanation
To design a vSphere environment that supports vSphere HA, key considerations include configuring the cluster properly, ensuring shared storage accessibility, setting up a reliable management network, and reserving resources for failover using admission control. While vSphere Fault Tolerance is a useful feature, it is not a direct requirement for HA and serves a different purpose in protecting specific VMs.
- A. Correct.
Correct: All ESXi hosts must be part of the same vSphere cluster to enable and use vSphere High Availability (HA). This ensures that the hosts can communicate and coordinate HA functionality.
- B. Incorrect.
Incorrect: While vSphere Fault Tolerance can complement HA, it is not a requirement for enabling HA. Fault Tolerance is designed for zero-downtime protection of specific virtual machines, not for general cluster-wide failover.
- C. Correct.
Correct: A dedicated management network with redundancy is critical for HA communication. This ensures HA heartbeat signals can be exchanged reliably between cluster hosts.
- D. Correct.
Correct: Shared storage is a prerequisite for vSphere HA because it allows the surviving hosts to restart failed virtual machines by accessing their disk files.
- E. Correct.
Correct: Admission control ensures that sufficient resources are reserved in the cluster to handle failover scenarios. Without this, HA may not function as expected in the event of a host failure.