Verifying object integrity

The StorageGRID Webscale system verifies the integrity of object data on Storage Nodes, checking for both corrupt and missing objects.

There are two verification processes: background verification and foreground verification. They work together to ensure data integrity. Background verification runs automatically, and continuously checks the correctness of object data. Foreground verification can be triggered by a user, to more quickly verify the existence (although not the correctness) of objects.