It is depends on the test report database. By default, Spirent iTest saves test reports to a database within your workspace. Spirent iTest users that use other workspaces might find it cumbersome to access test reports in your workspace. To make it easier for everyone on your team to share report data, you can configure Spirent iTest to save test reports to an external centralized database that is accessible to all Spirent iTest and iTestRT users rather than to the default ‘standalone’ database within your workspace. If the database to store test report is an Internal database then it will take less time to delete the test reports, but if it is an External database it will take more time.