We are now considering enabling audit logs in exchange environment to monitor hard and soft deletions of e-mail. We have 2 main concerns. The performance impact of the exchange system with the audit logs enabled on the exchange server and the amount of space consumed by the audit logs while enabled. Also should I have other concerns with enabling auditing? From past experience enabling auditing for prolonged periods has had a detrimental effect on the system. Once enabled, we will be leaving the logging enabled 24x7x365.