Apache CouchDB is the NoSQL database that File Dynamics uses for:
Work Log reports
Epoch Data Protection policies
Security policies
Security Notification policies
Security Lockdown policies
Security Fencing policies
As a document-oriented database (as opposed to a relational database) it is ideal for fast data analysis.
If you do not plan to initially create any of these policies, there is no need to install CouchDB. However, we recommend that you do so anyway so that your system will be ready once you decide to do so.