Clouds are growing very fast with companies creating new resources and migrating existing workloads from private clouds or bare metal. But it comes to be tricky to figure out all the migration costs and how big your cloud bill will be when the migration is done. Let’s discuss all the expenses in detail, unveil hidden costs and I’ll give some hints how to prepare for the migration.
This article is dedicated to FinOps teams to help properly plan for a lift-and-shift migration and project cloud costs.
You can definitely try to migrate with some scripts but it doesn’t work for big migrations. Consider either a free cloud migration solution or a more sophisticated one. I describe pros and cons of the tools in one of my recent articles.
Lift-and-shift consists of full and incremental replicas. Full replica means that all the data will be copied to the target side. Definitely, there are various compression algorithms, but, by default, consider that your traffic consumption will be at least (and in case of incrementals it will be much higher) the size of all the disks on your machines. In the majority of the cases network traffic is not free, and often this aspect is neglected during planning.
The list above covers different aspects of a regular lift-and-shift project. But even if you fail with an accurate estimate for the project from a time or cost perspective, in the majority of the cases it can have a significant but not fatal impact. The real issue is to properly project your monthly or annual cloud costs when the migration is done as migration from a private cloud requires a change in FinOps stakeholder mindset and it switches from CAPeX to OPeX. Some companies are not prepared for that. Here is an article where I describe different cloud cost projection strategies.
Clouds are extremely helpful for company growth, cloud migration is totally doable in 99% of the cases. But these two clauses are valid only if you are well-prepared and have a clue what you do.
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