Note this only works if you are migrating from Hyperglance 6.3.3 (or newer) to a new version!
If you wish to migrate from one AWS Tier to another follow this procedure:
1) Stop Hyperglance instance
2) Detach data volume
3) Deploy new tier instance from the marketplace
4) Stop the new instance
5) Detach data volume
6) Attach old data volume to /dev/xvdf
7) Start new instance
8) Login to Hyperglance via Browser
To understand more about the makeup of the Hyperglance appliance read more about the Deployment Architecture.