3V0-21.23 · Question #126
An architect is tasked with updating the design of an existing vSphere-based solution for a pharmaceuticals customer. The update will include upgrade to VMware vCenter 8 and VMware vSphere 8 and the…
The correct answer is B. The maximum supported configuration will ensure the virtual machines will adhere to a single Non-. NUMA (Non-Uniform Memory Access) is a system architecture in which a multiprocessor system is divided into multiple memory nodes. Each NUMA node typically has its own local memory that is faster to access than remote memory from other nodes. In this case, each ESXi host has two…
Question
An architect is tasked with updating the design of an existing vSphere-based solution for a pharmaceuticals customer. The update will include upgrade to VMware vCenter 8 and VMware vSphere 8 and the creation of a new cluster that will be used for ongoing research projects. The research project that is driving the need for an update includes a number of applications that are latency-sensitive. The customer has confirmed the following information during the initial workshop:
The customer recently completed a right sizing exercise using VMware Aria Operations that resulted in a number of ESXi hosts becoming available for use. Each of the VMware ESXi host servers is configured with:
-- 2 x 20-core Intel Xeon CPU sockets -- 1024 GB RAM divided evenly between sockets There is no additional budget for purchasing hardware. After confirming the existing hardware is still listed on the VMware Hardware Compatibility List (HCL), the architect makes the following design decisions with regard to the workload design:
The solution will support a maximum of 20 combined cores and sockets per virtual machine. The solution will support a maximum of 512 GB RAM per virtual machine. What should the architect document as justification for these design decisions?
Options
- AThe maximum supported configuration will ensure efficient use of RAM by sharing memory pages
- BThe maximum supported configuration will ensure the virtual machines will adhere to a single Non-
- CThe maximum supported configuration will ensure each virtual machine will exclusively consume a
- DThe maximum supported configuration will allow the creation of virtual machines that cross NUMA
How the community answered
(25 responses)- A12% (3)
- B56% (14)
- C24% (6)
- D8% (2)
Explanation
NUMA (Non-Uniform Memory Access) is a system architecture in which a multiprocessor system is divided into multiple memory nodes. Each NUMA node typically has its own local memory that is faster to access than remote memory from other nodes. In this case, each ESXi host has two CPU sockets (each with 20 cores) and 1024 GB of RAM divided evenly between the two sockets, meaning there are two NUMA nodes in each host. By limiting the virtual machine to a maximum of 20 cores and sockets per virtual machine, and 512 GB of RAM, this ensures that each virtual machine will fit within a single NUMA node, preventing the virtual machine from crossing NUMA node boundaries. This design helps maintain better memory access performance and avoids potential performance degradation that can occur when a VM accesses memory across NUMA nodes.
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