My understanding is that the NAVCC (when fully up and running at full  
capacity) will in fact be significantly larger then other  
repositories that you mention. This was mentioned in passing by  
several vendors who responded to the RFC for the acquisition of the  
storage subsystem. I do not know personally if that is true, but the  
vendors responding were the players who would have been in a position  
to know that kind of information and I have no reason to doubt them.  
The repository for NAVCC is however very specialized due to the  
mission - and there are many things to look at with repositories on  
the scale that we are discussing - access for example is an important  
area. Some repositories may be smaller in terms of the amount of TB's  
stored, but may have very large bandwidth requirements due to the  
access requirements. Others may be much larger but could essentially  
be "dark" archives which collect information but have it only  
accessed infrequently - so which is "bigger" depends very much on how  
you define your terms.

An article on the NAVCC is located here.

Jim Lindner

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On Dec 13, 2006, at 12:34 PM, Mike Richter wrote:

> Jim Lindner wrote:
>> This is a very interesting post, just one very quick comment. I  
>> have been a consultant for the Library of Congress for about 5  
>> years now - and I can tell  you for sure - absolutely - that those  
>> quotations of space are just - well - silly. Since the library  
>> does not even have a full accounting of exactly how large the  
>> collection is - and because it grows every minute (literally)  
>> these "estimates" really have absolutely no basis in fact. The  
>> Libraries collection includes many more types of objects then  
>> books. And even if you just consider the books - they are in many  
>> different languages - and what about the pictures in the books?  
>> There are illuminated manuscripts. In the National Audio Visual  
>> Conservation Center being built in Culpeper Virginia, the estimate  
>> is that many terabytes a day will be generated in the transfer of  
>> analog carriers.
> Once upon a time, I had clearance to ask what the traffic and  
> storage numbers were for NSA. Since I never asked, I may speculate  
> that it would make the LoC's efforts pale in comparison
> Mike
> -- 
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