In April 2010, the SSRC began implementing a prototype digital archive called Pergamum for the Academy of Motion Picture Arts and Sciences (AMPAS). Pergamum is a disk-based archival storage system which stores data on low-cost, low-power nodes called "tomes". In order to provide reliable long-term digital storage, Pergamum maintains augmented intra-disk and inter-disk redundancy, allowing for recovery from both latent sector errors and entire disk or tome failures. Pergamum periodically verifies stored data using intra-tome disk-scrubbing and inter-tome signature-tree exchanges to detect errors early. To conserve power, a small amount of Flash is available on each tome, which is used to store algebraic block signatures, allowing each tome's disk to be aggressively spun down even during most integrity checks.

This talk will provide a brief overview of the Pergamum architecture and will discuss the current status of the AMPAS Pergamum prototype.