1. FYP Briefing Presentation Experiencing Content Addressable Storage: I really hate removable hard disk April 9, 2009 Presented by: Dr. T.Y. Wong

2. What is CAS? Project Motivation DATA BLOCK copy DATA BLOCK In disk Traditional way:

3. What is CAS? Project Motivation DATA BLOCK copy DATA BLOCK In disk The CAS way: Hashing based on the content is the way.

4. Why Virtual Machine? Project Motivation Starting VM tywong copied it and use it. The extra storage needed for tywong is just these blocks!!

5. Proposal To have a centralized server machine to host the CAS. What does the CAS look like? –It is a full-fledged file system installed on Linux. Project Proposal Centralized CAS

6. Proposal The CAS stores virtual machines. –A client accesses the virtual machines through network. –SMB (CIFS) and NFS. Project Proposal Centralized CAS

7. Challenges Hashing takes time…how to make it less damaging? Scalability? Project Proposal Will this scale take down the storage?

8. Minor Challenges Performance Measurement? Choice of Virtual Machine? How to run a FS for Linux? Project Proposal

9. Project Goal My Expectation: –I really hate removable hard disk, and –I really want to make this project into a real thing! Let’s do it in passion! –Make this project a real system that you’ll be proud of. –Make this project a real experience for you to learn the industry storage practice. Project Outlook

10. Thank You! Any Questions?