Mike and Damien,

Please keep us informed on what you end up doing. This could end up
being very useful to others.

David Seubert

Casey, Michael T wrote:

>The Sound Directions project is also investigating the use of
>"checksums" (MD5 hash, SHA-1, for example) at Indiana University and
>Harvard University. We will investigate data integrity checking both for
>interim (within our archives) and long-term (mass storage)storage. We're
>just getting rolling but I expect we will have data on performance,
>implications for workflow, etc. next year.
>Mike Casey
>Coordinator of Recording Services
>Archives of Traditional Music
>Indiana University
>(812) 855-8090
>-----Original Message-----
>From: Association for Recorded Sound Discussion List
>[mailto:[log in to unmask]] On Behalf Of Damien Moody
>Sent: Monday, August 15, 2005 7:03 AM
>To: [log in to unmask]
>Subject: Re: [ARSCLIST] long range file storage
>My department is investigating the use of checksums for the National
>Audio Visual Conservation Center. Checksums are a good way to validate
>files. Our concern here, though, is that our archive will be so large
>and process so much data that we may not be able to create/compare
>checksums on every file - perhaps only 1 to a few percent. We may just
>have to accept a certain amount of file corruption risk. But we'll
>surely continue investigating ways to ensure file integrity for
>extremely large archives.
>Damien J. Moody
>Information Technology Services
>Library of Congress