What information lifecycle management is

Information lifecycle management is a set of rules that determine how an object’s data is protected from loss over time.

ILM rules define:

Information lifecycle management settings are implemented through an ILM policy that is made up of ILM rules. Every object ingested into the system is evaluated against the ILM policy and its ILM rules. ILM rules use an object’s metadata to filter an object and determine what actions to take in storing and copying the object’s data. For more information about configuring ILM rules and policies, see the Administrator Guide.

The following figure shows an ILM policy whose ILM rule determines the following:
  1. When an object is ingested (day zero):
    • One replicated copy is stored at Data Center 1 (DC1) on disk (Storage Nodes)
    • One replicated copy is stored at Data Center 2 (DC2) on disk (Storage Nodes)
    • One replicated copy is stored at DC2 on tape (Archive Node)
  2. At the end of one year, the copy on disk at DC2 is deleted.

diagram showing action of ILM policy described in surrounding text