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 Achouiantz Terry Moore
		Micah Beck Jim Plank
		Wael Elwasif Martin Swany
		Patrik Johansson Rich Wolksi
	UNC-CH School of Information and Library Science
		Bert Dempsey Paul Jones (MetaLab)
		Rebecca Wang Zhiwei Xiao

I2-DSI Sponsors

	Cisco DNS redirection
	Ericsson engineering effort
	IBM large storage servers
	Novell storage & directory servers
	Starburst reliable multicast software
	StorageTek large 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

Current I2-DSI Channels

The Need for Channel Representation Standards

I2-DSI Plans

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