When you say, about 30TB of video, I’m assuming you mean raw shooting files and audio recorded while shooting. There may also be some final edited content in this 30TB?
Anyway, about the shooting files themselves, it may not be desirable to actually make these available online in their raw form. The files will likely be too large to download and play. And they may be in a format that may not even play online.
So, it might make sense to first transcode them into a web-friendly proxy format. That may even reduce the 30Tb to a smaller number.
These proxies could have burn-ins with some metadata. Speaking of which, if there is some metadata that would be useful to a viewer, then that can be inserted into the file and made available in a burn-in in the video itself. And maybe even added to the file/folder name.
After that, you could host these in a video platform like Vimeo, or frame io or some such. Or, if you’d like it to be local and if your organisation can manage the IT resources needed, you could host it yourselves using something like Kollaborate Server.
And then, backup. I’m guessing these drives are of various ages, so it may make sense to make another backup to newer drives, and possibly LTO tape if your budget allows.