Watching the announcements coming out of EMC World today, one bit of jargon stuck out at me: The EMC bloggers are starting to refer to “data deduplication” as “3D”. I had never heard this terminology before yesterday, but the EMCers are all using it, so it must be a popular term inside that company. So I’m just giving my readers a heads-up: 3D is deduplication, at least at EMC.