Pergamum: Replacing Tape with Energy Efficient, Reliable, Disk-Based Archival Storage

As the world moves to digital storage for archival purposes, there is an increasing demand for reliable, lowpower, cost-effective, easy-to-maintain storage that can still provide adequate performance for information retrieval and auditing purposes. Unfortunately, no current archival system adequately fulfills all of these requirements. Tape-based archival systems suffer from poor random access performance, which prevents the use of inter-media redundancy techniques and auditing, and requires the preservation of legacy hardware. Many diskbased systems are ill-suited for long-term storage because their high energy demands and management requirements make them cost-ineffective for archival purposes. Our solution, Pergamum, is a distributed network of intelligent, disk-based, storage appliances that stores data reliably and energy-efficiently. While existing MAID systems keep disks idle to save energy, Pergamum adds NVRAM at each node to store data signatures, metadata, and other small it...

• Type: Conference
• Year: 2008
• Where: FAST
• Authors: Mark W. Storer, Kevin M. Greenan, Ethan L. Miller, Kaladhar Voruganti
• Keywords: Archival, Archival Purposes, FAST 2008, Operating System, Pergamum