Repositories Repositories house your security software packages and their updates for distribution to your managed systems. Security software is only as effective as the latest installed updates. For example, if your DAT files are out of date, even the best anti-virus software cannot detect new threats. It is critical that you develop a strong updating strategy to keep your security software as current as possible. The McAfee ePO repository architecture offers flexibility to ensure that deploying and updating software is as easy and automated as your environment allows. Once your repository infrastructure is in place, create update tasks that determine how, where, and when your software is updated.