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?
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Reference / correct answer:
Most accepted answer: A. 12
Community votes: A=3, B=1, D=1
Selected Answer: A Production-- 10:1 for production 10 vCPUs : 1 Physical Core 600+2400+800GB =3800GB RAM 300x1+400x2+100x4=300+800+400=1500 vCPU --> 150 Physical Core 5hosts --> 3840GB RAM Development-- 20:1 for development 20 vCPUs : 1 Physical Core 400GB RAM 200vCPU --> 10 Physical Core total: Primary site (Prod) 75 Physical Core --> 2 host 1900GB --> 3host mínimo - win 3 + 1 = 4 Secundary site (Prod + Secondary) Prod: 3800GB RAM --> 5hosts min --> win 150 Physical Core --> 4hosts 5+1=6 Develop: 400GB RAM --> 1host 10 Physical Core --> 1host - win 1+1=2 upvoted 1 times
Selected Answer: A The physical servers we'll be using are: 48 physical cpu's, 768GB ram Prod VM's = 10 virtual CPUs for every 1 physical CPU core (10:1) Dev VM's = 20 virtual CPUs for every 1 physical CPU core (20:1) Prod physical server = 480vCPU / 768GB RAM Dev physical server = 960vCPU / 768GB RAM Primary site: (HALF of the prod workloads). Prod = 150vcpu/300ram, 400vcpu/1200ram, 200vcpu/400ram Totals: 750vcpu / 1900gb ram. So we would need 3 servers and +1 (for N+1). Total Servers = 4 Secondary site: (ALL of prod workloads + ALL of dev workloads). Prod = 300vcpu/600ram, 800vcpu/2400ram, 400vcpu/800gb ram. Totals: 1500vcpu / 3800gb ram. So we would need 5 servers +1 (for N+1) Total Servers = 6 Dev = 200 small = 200vcpu/400gb ram Totals: 200vcpu / 400gb ram. So we would need 1 server +1 (for N+1) Total Servers = 2 4+6+2 = 12 upvoted 2 times
Selected Answer: B CPU 300 + 800 + 400 = (1500 / 10 + 200 / 20) / 48 = 4. RAM 600 + 2400 + 800 = (3800 + 400) / 768 = 6 Primary: 6+1=7. Secondary: 6+1=7. Total: 14. upvoted 2 times
Selected Answer: D 6 hosts will provide 4608 GB RAM which will be enough to run workloads in case of disaster, but there is also the requirement for N+1 tolerance which means 14 hosts are required. upvoted 4 times
Selected Answer: A 12 seems like the correct answer upvoted 1 times