Internet2 Distributed Storage Infrastructure Status Micah Beck, Chair Network Storage WG Innovative Computing Laboratory University of Tennessee, Knoxville.

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Internet2 Distributed Storage Infrastructure Status Micah Beck, Chair Network Storage WG Innovative Computing Laboratory University of Tennessee, Knoxville SC’99, Portland Orgeon 11/17/99

I2-DSI Developers UTK Computer Science Dept & Innovative Computing Laboratory –Christophe AchouiantzTerry Moore –Micah BeckJim Plank –Wael Elwasif Martin Swany –Patrik Johansson Rich Wolksi UNC-CH School of Information and Library Science –Bert DempseyPaul Jones (MetaLab) –Rebecca WangZhiwei Xiao

I2-DSI Sponsors CiscoDNS redirection Ericsson engineering effort IBM large storage servers Novellstorage & directory servers Starburst reliable multicast software StorageTeklarge storage servers Sun design collaboration

Single Server Model High performance locally Unacceptable performance across commodity backbone

Relying on Wide Area QoS High performance access with reserved bandwidth Essential for real-time communication Technically difficult, expensive, not generally available

I2-DSI Model: Replicated Services Clients access nearby server Everyone gets performance Local resources implement a global service

Current Server Deployment

I2-DSI Service Architecture Replication –Rsync+ Resolution –Cisco Distributed Director Delegation –Cache prefetch general users replicated core delegated server local users

Current I2-DSI Channels CPANThe Comprehensive Perl Archive Network. DocsouthDocumenting the American South collections (UNC- CH AAL) High MPEGHigh bandwidth MPEG-1 videos for local streaming delivery MetaLab LinuxA comprehensive Linux repository. (MetaLab) Mars'98Images from the Mars'98 Polar Lander. (NASA JPL) NetlibMathematical software, papers, and databases. (UTK ICL) NormosThe Normos Internet engineering standards repository. (Viagenie) Open VideoVideo content for the research community. (UNC-CH IDL)

The Need for Channel Representation Standards Origin Server proxy Replicated Server Standard-based Web traffic Replication of source files Web clients locally interpreted files Replicated Server replicated files

I2-DSI Plans Portable Channel Representation –Definition –Server & Authoring Tools Fast File Transfer International cooperation –CCIRN Working Group, APAN, TERENA More channels, ambitous content