Introduction

Introduction

For each production running in a given namespace, InterSystems IRIS may write entries to the event log, message warehouse, business process log, business rule log, and I/O archive log for the namespace. Since the entries can accumulate over time and consume large amounts of disk space, InterSystems IRIS enables you to purge outdated entries if you have appropriate permissions (see Controlling Access to Management Portal Functions).

You can do so manually; that is, you can purge production data on an ad hoc basis. You can also schedule regular purges. Typically, you perform manual purges on systems that you are using for development and testing, and you set up scheduled purges for live systems.

Purging generates journaling. If you purge a large volume of data, the resultant journaling can consume a large amount of disk space. To conserve disk space, you can purge smaller amounts of data and review the storage impacts before purging additional data.