Archives are created as a part of Information Lifecycle Management. Different use case scenarios exist, such as compliance archiving and storage capacity optimization. In general we speak about two different archive types:
Active Archives contains data which is too valuable to be deleted and is accessed occasionally by users. The data is retained in read-only mode as it’s required to be read from time to time without the need of modification. Active archives are usually protected by a replication mechanism as users still consult the data, instead of a general backup mechanism. This methodology allows a quicker recovery when the data location is lost.
Deep Archives stores data which is probably not accessed anymore. The data is retained for compliance reasons or by a specific request from the business. Deep archives are usually protected by a backup mechanism as the access frequency is low and the company can justify the time needed to recover the archive and/or application.