The grid administrator creates information lifecycle management (ILM) rules to manage object data ingested into the StorageGRID system from S3 REST API client applications. These rules are then added to the ILM policy to determine how and where object data is stored over time.
ILM settings determine the following aspects of an object:
- Geography
- The location of an object’s data within the StorageGRID system.
- Storage grade
- The type of storage used to store object data (disk or archival media).
- Loss protection
- How copies are made: replication, erasure coding, or both.
- Retention
- The changes over time to how an object’s data is managed, where it is stored, and how it is protected from loss.
ILM rules can filter and select objects. For objects ingested using S3, ILM rules can filter objects based on the following metadata:
- Tenant Account
- Bucket Name
- Ingest Time
- Key
- Last Access Time
Note: By default, updates to last access time are disabled for all S3 buckets. If your StorageGRID system includes an ILM rule that uses the Last Access Time option, you must enable updates to last access time for the S3 buckets specified in that rule. You can enable last access time updates using the PUT Bucket last access time request, the check box in the Tenant Manager, or using the Tenant Management API. When enabling last access time updates, be aware that StorageGRID performance might be reduced, especially in systems with small objects.
- Location Constraint
- Object Size
- User Metadata
- Object Tag