Once you have created ILM rules and an ILM policy, you can continue to work with them, modifying their configuration as your storage requirements change.
Choices
Deleting an ILM rule
To keep the list of current ILM rules manageable, delete any ILM rules that you are not likely to use. You cannot delete the stock ILM rule (Make 2 Copies), ILM rules listed in the active policy, or ILM rules currently listed in the proposed policy.
Editing an ILM rule
You might need to edit an ILM rule to change a filter or placement instruction. You cannot edit the stock ILM rule (Make 2 Copies), ILM rules listed in the active policy, ILM rules listed in the proposed policy, or ILM rules created before StorageGRID Webscale version 10.3.
Cloning an ILM rule
You cannot edit a rule if it is being used in the proposed ILM policy or the active ILM policy. Instead, you can clone a rule and make any required changes to the cloned copy. Then, if required, you can remove the original rule from the proposed policy and replace it with the modified version. You cannot clone an ILM rule if it was created using StorageGRID Webscale version 10.2 or earlier.
Viewing the ILM policy activity queue
You can view the number of objects that are in the queue to be evaluated against the ILM policy at any time. You might want to monitor the ILM processing queue to determine system performance. A large queue might indicate that the system is not able to keep up with the ingest rate, the load from the client applications is too great, or that some abnormal condition exists.