• Automatically migrate data according to user-defined policies—“value-driven”: – Extends HSM capabilities with policy engine – Might also include discovery and classification tools
High-end storage
Policies
Low-end storage
Policies
Nearline storage
Policies
Archival storage
Automated Data Migration (ADM) tools automate the migration of data from one storage class to another based on user-defined policies. ADM solutions are a combination of intelligent storage resource management (SRM) and HSM:
HSM was designed to automate data migration for archival purposes, and it is access-driven
how frequently the data is accessed determines where it is stored. ADM solutions migrate data across storage resources based on user- defined criteria, not just age or frequency of usage.
ADM solutions are designed to classify different tiers of storage, not just online versus nearline versus offline storage. Ultimately, HSM and ADM solutions are similar in terms of the underlying technology, but ADM solutions are “value- driven” rather than “age-driven”.