FYI only.. A nice paper which give some insight on infra storage structures within google. Scable to petabyte levels.

To appear in Nov/2006 : Operating System Design and Implementation, 7th Symposium.

labs.google.com/papers/bigtabl ...

MSFT research thesis in with the boxwood project .

research.microsoft.com/researc ...

Both articles are are good , intensive read ..have fun :)-