NAS for 4k movies?

[Enquiries]

Hello, I am emailing form Canada where my internet speed is 940 Mbps download and 940 Mbps upload on fibre optics. I would like to store all of my 4k movies, bluray movies, hundreds of music Flac files and thousands of family photos that can be accessed by 8 family member that are around the world, majority in Canada and USA. Just wondering if this is possible because sometime there can be all 8 members of the family watching 4k movies at the same time.

Thank You