Those articles sound like they were written by "media fossils", that is to say people who have been around media for many years. However, they are confusing their tapes with their discs.
There were conflicting preferences as to whether tapes should be stored on the side, or flat. It was an argument over gravity, combined with the tape innards potentially shifting around. There really was not "proper" way -- gravity affected the tapes regardless of storage orientation.
Discs have no such parts. Discs must be stored flat to sit in proper spindles. The only way to store a disc vertically is to lay a spindle sideways, or to place inside a case.
- The sideways spindle will potentially "rattle" discs back and forth, if the spindle is not full or completely stabilized. The way to stabilize it is to cushion it. However, many times the cushion will cause undue stress on the discs.
- The cases may or may not stress the hub, which could lead to warping of a disc, or damage to the hub (which in turn could damage the inner part of a disc -- an irreparable damage on dye-based or phase-change media).
So I don't know what sort of non-sense logic those folks are trying to follow.
Your method of burning data to Taiyo Yuden media is one decent option. The other would be the terabyte-sized hard drives, external USB2 or Firewire.
With the amount of data I have to store, an online storage method would take forever minus a day to upload. It's already slow enough to copy to the external drive (hours and hours) -- online transfer would easily take days/weeks to perform such a large transfer of data. Online backup isn't even an option on the SAN at my office, because the gigabit ethernet is still too slow compared to direct-to-computer transfers.
If you have e-SATA external connectivity capabilities, that would transfer even faster than USB2 or Firewire.
If you are happy with your current TY-disc method, I would at very least suggest trading in the Tyvek for plain paper sleeves. The plastic-to-plastic contact is not good for a disc. Paper does not "stick" to a disc like Tyvek and other materials tend to do over time.