This rang a bell with me, so I ran a Google search on 'computer hologram
memory'. The following quote turned up at
http://www.eio.com/public/hologrph/0033.html (watch wrap!)

"...The memory is stored on a ball or cube the size of a sugar cube. For
each .002 degrees it is turned, another "channel" is activated. Each channel
contains more than one gigabyte of information storage. The cube or ball is
read with a low powered laser and it is unaffected by magnetic pulse weapons
(also pulses from nuclear weapons). "

A couple of other articles related to this are at these pages:

http://www.digit-life.com/articles/memorytwodirections/
http://www.howstuffworks.com/holographic-memory.htm?printable=1

The current upper limit for 3D holographic storage seems to be around 1T.

------------------------------------
Paul S. Butler, System Administrator
Data Trace Information Services LLC
(916) 797-5000

----- Original Message -----
From: "Robert Mills" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Thursday, May 03, 2001 5:20 AM
Subject: OT: 1,000GB sugarcube


> "A group of researchers at Japan's Kyoto University and Central Glass
> Company have developed a 'memory cube', a sugarcube-sized piece of glass
> used as optical storage. The system works using femtosecond lasers to
> produce tiny bubbles within the glass. These laser produced extremely
short
> bursts of light. The glass contains the element samarium and the resulting
> bubbles become luminous, enabling them to be read again. The bubbles are
400
> nanometers in diameter and placed 100 nanometers apart. A cube with 2,000
> layers has been produced capable of storing 1,000GB of data.

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