Hardware Requirements
Nessus Agents
Nessus Agents are designed to be lightweight and to use only minimal system resources. Generally, a Nessus Agent uses 40 MB of RAM (all pageable). A Nessus Agent uses almost no CPU while idle, but is designed to use up to 100% of CPU when available during jobs.
For more information on Nessus Agent resource usage, see Nessus Agents Performance.
The following table outlines the minimum recommended hardware for operating a Nessus Agent. Nessus Agents can be installed on a virtual machine that meets the same requirements specified.
Hardware |
Minimum Requirement |
---|---|
Processor |
1 Dual-core CPU |
Processor Speed |
> 1 Ghz |
RAM | > 1 GB |
Disk Space |
> 1 GB with normal usage > 2 GB under certain conditions, e.g. when a plugins-code.db defragmentation operation is in progress |
Disk Speed | 15-50 IOPS |
Nessus Manager
Scenario |
Minimum Recommended Hardware |
---|---|
Nessus Manager with 0-10,000 agents |
CPU: 4 2GHz cores Memory: 16 GB RAM Disk space: 30 GB, not including space used by the host operating system. Note: Scan results and plugin updates require more disk space over time. |
Nessus Manager with 10,001-20,000 agents
|
CPU: 8 2GHz cores Memory: 64 GB RAM Disk space: 30 GB, not including space used by the host operating system. Note: Scan results and plugin updates require more disk space over time. Note: Engage with your Tenable representative for large deployments.
|