It is appealing to deploy an SDDC and to "just use it".
And even though this is certainly possible, you might end up with quite a few challenges.
As an example, you should verify your storage needs and set your storage policies right for your VMs.
Failure in doing so can lead to increased storage consumption, which can cause additional Nodes being added at an extra cost.
To avoid any storage related challenges, my colleague Glenn Sizemore, one of VMware's Technical Marketing Architects focusing on Storage in VMware Cloud on AWS, crafted the following Blog article, outlining all important settings and explains the responsibilities in detail:
Customer Responsibility within VMware Cloud on AWS (Storage)
Happy reading and as always: please feel free to reach in case you have any further questions.
We, the Customer Success Team, is here for you to help you get the most out of the VMC Service.
All the best,
Rick
Rick Hoffmann
Cloud Customer Success Architect - VMware Cloud
VMware Inc.
http://cloudsuccess.blog