VMware vSphere 6 Advanced Design (VCAP6-DCV Design) — Question 55

A developer is tasked with building an application to process shipping requests. The developer is consulting the vSphere team to determine failover options and performance best practices.
✑ The development team is providing three physical ESXi hosts with 8 CPU cores and 256GB of RAM per host.
✑ The developer does NOT know how many virtual machines they will require.
Which virtual machine (VM) sizing strategy will provide the highest level of uptime, individual VM performance, and failover capacity?

Answer options

• A. A few large 8 vCPU VMs per host protected by vSphere HA.
• B. Many small 1 vCPU VMs participating in an OS level clustered application protected by vSphere HA.
• C. A few large 8 vCPU VMs per host protected by vSphere Fault Tolerance.
• D. Many small 1 vCPU VMs participating in an OS level clustered application protected by vSphere Fault Tolerance.

Correct answer: B

Explanation

Option B is correct because using many small VMs allows for better load distribution and ensures that if one VM fails, others can continue to operate, thus providing high availability and failover capacity. Options A and C focus on larger VMs, which may lead to resource contention and reduced uptime. Option D, while using Fault Tolerance, does not provide the same level of flexibility and uptime as the clustered approach with HA in option B.