VMware 3V0-21.23 Question Answer
An architect is designing a new vSphere-based solution for a customer.
During a requirement gathering workshop, the following information is provided:
The solution must have a primary and secondary site.
The solution must support a maximum of 1,000 concurrent workloads.
The profile of the workloads are as follows:
- Production Workloads
-- 300 x Small: 1 vCPU, 2 GB RAM
-- 400 x Medium: 2 vCPU, 6 GB RAM
-- 100 x Large: 4 vCPU, 8 GB RAM
- Development Workloads
-- 200 x Small: 1 vCPU, 2 GB RAM
The corporate security policy states that, during normal operations, production workloads must be physically segregated from development workloads.
All production workloads are split evenly across the primary and secondary site.
All development workloads run only within the secondary site.
In the event of a disaster affecting workloads in the primary site, the secondary site must be capable of running all production and development workloads.
The vCPU to physical core ratio should be a maximum of 10:1 for production workloads and 20:1 for development workloads.
The solution should provide a minimum of N + 1 resiliency at each component level.
The target physical host hardware platform has already been defined by the company's hardware standards and therefore each host has the following configuration:
-- 2 x 24 physical cores
-- 768 GB RAM
-- 2 x 100 GB SSD drives
-- 6 x 10 GbE network cards
What is the minimum number of hosts required to meet the requirements?
300 x Small: 1 vCPU, 2 GB RAM
400 x Medium: 2 vCPU, 6 GB RAM
100 x Large: 4 vCPU, 8 GB RAM
Small: 300 x 1 = 300 vCPUs
Medium: 400 x 2 = 800 vCPUs
Large: 100 x 4 = 400 vCPUs
Small: 200 x 1 =200 vCPUs
All development workloads run in the secondary site:200 vCPUs.
Production workloads:10:1 ratio(vCPU to core ratio).
Development workloads:20:1 ratio(vCPU to core ratio).
Each host has24 physical coresand768 GB of RAM.
Since the maximum vCPU-to-core ratio for production is 10:1, each host can support240 vCPUs(24 cores x 10).
For development, with a ratio of 20:1, each host can support480 vCPUs(24 cores x 20).
200 vCPUs divided by 480 vCPUs per host =0.416 hosts(rounding up =1 hostfor development).
N + 1 resiliencymeans we need one extra host per site to provide redundancy.
1 hostfor development in the secondary site.- Printable Format
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