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SINN01 Technical Workshop Oldenburg 5-7 Dec 2001 Mirroring Status & Techniques Thomas Severiens Institute for Science Networking Carl von Ossietzky Universität.

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Presentation on theme: "SINN01 Technical Workshop Oldenburg 5-7 Dec 2001 Mirroring Status & Techniques Thomas Severiens Institute for Science Networking Carl von Ossietzky Universität."— Presentation transcript:

1 SINN01 Technical Workshop Oldenburg 5-7 Dec 2001 Mirroring Status & Techniques Thomas Severiens Institute for Science Networking Carl von Ossietzky Universität Oldenburg

2 SINN01 Technical Workshop Oldenburg 5-7 Dec 2001 2 Status: PhysNet Mirroring  System-independent skript  Self-explaining installation  Institutionalization (“mirror at...”)  Auto-Updating (Skript is part of the mirror)  File-Lists  Pull of all files everytime  Update dates get lost...

3 SINN01 Technical Workshop Oldenburg 5-7 Dec 2001 3 Status: PhysNet Mirroring

4 SINN01 Technical Workshop Oldenburg 5-7 Dec 2001 4 Better (?) Solutions  Incremental Mirroring  only newer files are transfered  check for last_modified and file_size  transfer only of HTTP-Header  Removal of old files  security!!!

5 SINN01 Technical Workshop Oldenburg 5-7 Dec 2001 5 Better (?) Solutions  Distributed system  depending on transfer rates  calculation of network topology

6 SINN01 Technical Workshop Oldenburg 5-7 Dec 2001 6 Distributed Systems

7 SINN01 Technical Workshop Oldenburg 5-7 Dec 2001 7 Distributed Systems

8 SINN01 Technical Workshop Oldenburg 5-7 Dec 2001 8 Distributed Systems

9 SINN01 Technical Workshop Oldenburg 5-7 Dec 2001 9 Distributed Systems

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