Re: There was something newsworthy there
"But by parroting the press release you didn't really pull it apart."
Bit harsh - these are potentially useful for compliance requirements, legal hold copies, preventing data tampering, etc.
"At over 500 notes for 1 TB, you could buy ten 1TB HDDs, treat them as write once, pull from the rack and stick them on a shelf"
Have you looked at the cost of dedicated WORM arrays?! And what you propose is not quite the same though. When you plug them back in they could get corrupted if you were not aware of a nasty. Or someone could go edit the contents...
Also this includes white and black list capabilities which if actually secure is an unusual and potentially useful feature...