How to optimize video storage on servers?

Question

linux

The situation is this:
There is a site with movies, 4 servers, each server can give 250 Mbps. Each of the servers has 2-3 RAID 0 hard drives. The scheme for distributing video among servers is as follows:
the two least full drives are taken, and the video is transferred there, that is, it is stored on two different servers for greater reliability. The problem is that with a load of 600-800 people online, the capacity was not enough, the video slows down. Before that, there was this scheme: the same videos were stored on all 4 servers, directories were synchronized using rsync, and a random ip was selected when the page was opened. But the fact is that the memory is not rubber, and you need a place for other projects. Who will tell you what to do? Thanks

Answer 1

build a distribution system often - medium - low-demanded
recalculation once a month/week
on disks - raids, remove duplicates, if very valuable - host on stacks like these

Answer 2

I don’t know for sure, I haven’t worked with this, but maybe try to use the Amazon cloud?