Depends...do you have an RSA installed? If so, you can use IBM Director to manage the systems (or the RSA's web-based GUI without IBM Director). From either, you can save and/or clear the logs. Typically, if the logs are full, you've had the box up/down/connected/disconnected from power a bunch of times, or its reporting a problem you have not corrected. In either case, when complete, you should clear the logs and start from a clean slate.