Jonathan S. Goldick, Kathy Benninger,
Christopher Kirby, Christopher Maher, Bill Zumach
Pittsburgh Supercomputing Center
1.  Abstract
The Pittsburgh Supercomputing Center has been working to integrate distributed
file system technology with hierarchical mass storage.  We produced a system
utilizing the Andrew File System that can be interfaced to many mass storage
systems.  We retained the semantics of AFS and compatibilitywith standard
clients and servers.  The architecture has a logical separation between the
facility that provides the user interface and access semantics and the
management of the storage systems that contain user data.  Support for file
level replication is provided for high availability to data in a fashion that
is transparent to users.  This system is called Multi-Resident AFS.

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