1. The Internet2 Distributed Storage Infrastructure Project http://dsi.internet2.edu/ Innovative Computing Laboratory, Tennessee –Micah Beck –Terry Moore –Martin Swany Bert Dempsy, UNC Ron Hutchins, GaTech UCAID/Internet2 –Ted Hanss –Network Storage Working Group Industrial Sponsors –IBM –StorageTek –Novell –Cisco –Sun Microsystems –Starburst Communications

2. Single Server Model High performance locally Unacceptable performance across commodity backbone

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

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

5. I2-DSI Service Architecture Core servers Users at periphery Delegation Open for I2 publishers general users replicated core delegated server local users

6. Nearer, my data, to thee 3 users, 3 experiences 3 users, 1 experience I2 Distributed Storage

7. Internet2 Channels Definition: A channel is a collection of content which can be transparently delivered to end user communities at a chosen (price,performance) point through a flexible, policy-based application of resources

8. Internet2 Channel Strategy Channel=Internet Domain –DNS is our ubiquitous resolution service Locality through replication –Replicate the channel close to the client. Resolution w/proximity –Detect “closest” replica during resolution

9. Proximity-based DNS resoluiton DNS sonar SonarDNS: Martin Swany http://www.cs.utk.edu/~swany/sonardns Multiple IP addresses Sonar interface draft-moore-sonar-03.txt

10. Applications Digital libraries –Video –Digitized originals Large data sets –Medical imaging –CERN instruments –Satellite images & GIS Video distribution

11. Appliation Tools vs. Medium Application Middleware Network Application Middleware Programming interface custom service Network Server Middleware Client content standard service Middleware

12. Status and Direction Funding from IBM and UCAID sponsors –StorageTek, Starburst, Cisco, Sun, Novell –$1.4M IBM Equipment grant for core servers Placement & operation of core servers Resolution strategies: BGP, DNS, URI Content standards and APIs International deployment –Canada, Europe, Japan