The Internet Archive discovers and captures web pages through many different web crawls.
At any given time several distinct crawls are running, some for months, and some every day or longer.
View the web archive through the Wayback Machine.
Web wide crawl with initial seedlist and crawler configuration from October 2010
TIMESTAMPS
The Wayback Machine - https://web.archive.org/web/20110106210509/http://www.searchengineoptimising.com/glossary/glossary-of-computer-and-internet-terms/filesystem
A File System is located on a computers hard drive and they contain all the files in a directory. This root directory will be created when you format the hard disk and every time you add a new file to it, it will be put in the appropriate directory.