In this project based on a real-world scenario, I acted as a Cloud Architect and created an executive presentation of infrastructure costs for a SAP migration project from On-Premises to AWS.
SAP workloads were running in a corporate DataCenter with the environment divided into Production, Quality Assurance - QA and Development/Test layers.
My mission was to estimate the costs of migration to AWS, considering that this infrastructure will be running on AWS for at least the next 3 years.
The architecture is as follows:
In the production environment there were 5 production web servers, with 1 load balancer, 2TB of block storage and 1TB of NFS storage. The same environment consisted of 2 DB servers with a total of 3TB of storage. The staging environment had 3 web server, with 1 load balancer, 1TB of block storage and 500GB of NFS storage. The same environment had 2 DB servers with a total of 3TB of storage. The development environment had 2 web servers, with 1 load balancer, 500GB of block storage and 250GB of NFS storage. The same environment had 2 DB servers with a total of 1TB of storage.
The requirements that the CIO wanted in the AWS environment were, that we have the best support possible with an SLA time of less than 15 minutes. He wanted 24/7 phone, chat and email access to Cloud Support Engineers. As mentioned he wanted to save money by using reserved instances for a 3 years period.
So with all this in place in the on premises environment, I calculated the cost of what it would be to run the same infrastructure in AWS. Using the AWS calculator, I was able to come up with the monthly cost and the firsts years cost based on the requirements above. When I was inputting the types of services and their amounts into the calculator, at the end of the calculation, I was then able to export the data to a csv file. Then I opened that file up in Excel and added up the total cost per month and added up the first years total cost as well. Then once that data was saved, I created a PowerPoint presentation with pie charts representing that data used in the Excel file. Here is what the presentation looks like:
As you can see the AWS calculator is a very handy tool in converting your DataCenter costs to what it would be to run the same infrastructure in the AWS cloud.