Simple definition
Cold storage holds rarely accessed data at reduced storage cost, often with slower retrieval or additional access charges.
Purpose and use
Cold storage targets infrequently used data for which less frequent or slower access is acceptable.
How does it work?
Placement can use a suitable class or medium; constraints depend on the service and lifecycle policy.
Example and verification
Test a recovery scenario with the required timing, volumes and permissions.
Points to watch
Cold does not guarantee that data is offline or impossible to modify.
In short
Choose cold storage by recovery requirements as well as access frequency.