Wayback Machine is web TIME Machine

Till now I heard the Time meachine word in the sci-fi films but perfectly we can use this word for archive.org, when I read the artcle in Wikipedia I really stunned by looking at the staticstics about data storage. It contains petabytes of data. First time I am hearing this petabytes,

PetaByte = 1000 tera Bytes

PetaByte = 10 to the 15th power, or 1,000,000,000,000,000 bytes.

we can get the our web sites archive from www.archives.org. Actually It is maintained with content from Alexa Internet. really this is aswome because even it takes snap shots of the web site.  it is Sanfransisco based company and it is non-profit organization.

Note:

After looking all the above information I checked this site, it is working for only some sites even in the archive it is not able to bring the data from the archive