How much storage is required for the Nessus scanner?

The Nessus scanner is known for its efficient use of disk space. Typically, a recommended storage allocation of around 30GB is sufficient for a typical Nessus deployment. This amount of space allows for the software installation itself, as well as the storage of plugins, scan results, and other operational data.

As scan results accumulate and more plugins are downloaded, the amount of required storage can increase, but starting with 30GB is a general guideline that works for many environments. Choices that suggest larger storage capacities, while they may offer more headroom for extensive usage or historical data retention, exceed the basic requirements for most typical scenarios in which Nessus operates effectively. Thus, 30GB represents a practical balance between resource utilization and operational need.