Archive data flow

An archive operation consists of a defined data flow between the StorageGRID Webscale system and the client. The system uses attributes to track the archival of the object to and from the appropriate storage media.

If the ILM policy requires that a copy of object data be archived, the ILM engine, which is a component of the LDR, sends a request to the Archive Node, which in turn sends a copy of the object data to the targeted archival storage system.


diagram showing the process described in surrounding text

  1. The ILM engine sends a request to the ARC service to store a copy on archive media.
  2. The ARC service queries the ADC service for the best source location and sends a request to the source LDR service.
  3. The ARC service retrieves object data from the LDR service.
  4. The ARC service sends the object data to the archive media destination.
  5. The archive media notifies the ARC service that the object data has been stored.
  6. The ARC service notifies the ILM engine that the object data has been stored.
  7. The ILM engine sends object location metadata to the DDS service.