Anti-virus software is highly recommended to prevent the execution of unknown software on a machine (for example, due to enabling of removable devices or USB ports).

Virus scanners distinguish between on-access scanning (only files that are currently requested to load are checked) and on-demand scanning (all files are checked during a scheduled scan). The minimum requirements for the virus scanner are on-demand scanning and virus definition updating features.

On-access virus scanners on servers are a trade-off between security and performance. We recommend that the performance of the system is tested with normal virus scanner settings.