DATE: Thursday , November 7, 2002
TIME: Noon - 1 pm
PLACE: Wean Hall 8220

Richard Golding
Panasas, Inc.

The Palladio Project: A Survivable, Scalable Distributed Storage System

Large-scale distributed storage services for cluster computing applications and for corporate IT systems must both give high performance and high reliability -- and increasingly, reliability includes the ability to survive site disasters. Palladio is a research storage system architecture that addresses these needs through a suite of protocols for run time data access and system management.

This talk first gives an overview of Palladio, and then focuses on the data access and metadata/structure management protocols. The data access protocols use an optimistic concurrency control technique to
provide serialized, atomic reads and writes; simulation results show this approach has higher performance than locking-based mechanisms. The data access protocols interact with the layout control protocols,
which handle failure detection, metadata management, and coordination of changes of the layout of data onto storage devices.

Dr. Richard Golding is currently a software architect with Panasas, working on high-performance file server systems. Previously, he was with the Storage Systems Program at Hewlett-Packard Labs, where he
worked on the AutoRAID project, storage system self-management, and the Palladio project, as well as working as a technology transfer liaison to the HP storage system product division. His PhD is from UC
Santa Cruz, having worked on group communication and weak-consistency wide area systems. Before that he spent a decade doing IT and graphics applications, including coauthoring the Sun olwm. His research interests are in reliable and well-performing distributed systems, with a focus on how decentralised, cooperating nodes can collectively produce a correct self-managing system.

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