Quick plug for a free tool that can be used to check for ransomware on a NetApp system. It checks against many known ransomware variants to report on files that have been affected that you may not be aware about. The reports are great, and it can’t be knocked for a free tool.
It is not a protection of any kind, but useful in the unfortunate event that you do get affected.
http://www.prolion.at/en/dataanalyzer#light