Plus to all: file servers as a rule represents by two ways 1. Storage system file service 2. Virtual server file service. On both choices symantec support low level file protection. At the level of disk volume and virtualization...

Microsoft is not in the leaders part of qudrant... But Symantec is :-) https://www.symantec.com/blogs/product-insights/and-right-symantec-leader-2018-mq-endpoint-protection-platforms https://www.symantec.com/about/newsroom/press-releases/2017/symantec_0213_02