Product : Amazon, AWS Snowball Edge/Current, all
Feature : Block storage, Storage, Infrastructure Services
Content Owner:  Bhagyashri (Shri) Bhagvat
Summary
Block storage must exist as the Snowball Edge is capable of hosting EC2 instances but end-users have no access to block storage and cannot attach volumes themselves to EC2 instances
Details
https://docs.aws.amazon.com/snowball/latest/developer-guide/using-ec2-endpoint.html#unsupported-features-ec2-adapter