Cold archives are often described as if they solve the continuity problem by existing. They do not.
A cold archive can preserve a model image, configuration set, or policy state with impressive durability. What it cannot do on its own is preserve operational tempo. Recovery still requires validation, transfer priority, trust boundaries, and enough nearby capacity to become useful again under stress.
This is where many continuity plans become too flattering to themselves. A preserved copy may satisfy auditors and still fail operators. If a system cannot be restored within the time its customers actually need, then the archive has protected assets without protecting service.
Live redundancy is expensive because it protects time as well as data. Cold archives protect memory. Those are related goods, not interchangeable ones.