Anyone interested in watching what I am doing on the net, has a really dull life. I pity them. So that is not really my problem here.
Can it actually be done? Physically.
Are there enough raw material to create magnetic disks, tape, dvd or whatever.
Note, IIUC, it is not to archive what is available on the net, but what is actually sent over the net, indefinitely, until the sun burns the earth ...