Earlier this fall, the Library of Congress once again hosted its invaluable invitational meeting on Designing Storage Architectures for Digital Collections, which surveys the current state of the art and prospects for various kinds of mass storage, which a particular focus on reliability and costs.
The materials from this meeting offer an excellent resource for those interested in these questions. They are now available at:
http://www.digitalpreservation.gov/meetings/storage16.html
On behalf of our community, I thank the Library of Congress for its continuing leadership in this area.
Clifford Lynch
Director, CNI