1. Volume Gateway (Stored mode) : Data is stored locally i.e., on-prem and a backup is copied to AWS.
2. Volume Gateway (Cached mode): data is stored in AWS (S3) and frequently accessed data are cached locally.
1. Volume Gateway (Stored mode)
2. Volume Gateway (Cached mode)
If you want to minimize on-prem storage but need fast access to frequently used data then you can choose cached mode over stored mode.
In the cached mode the primary data is located in AWS (S3) and the frequently accessed data us available in local cache.