In your company, where does the most important information exist in?

 

Among the file server, the database server, the mail server, which is the most crucial one for your buiness. you will get diffierent answer for different buiness, in different era, in some cases, the answer maybe all of them.

 

When people just begin to use the computer to store their data, file is data container, more and more data are stored in more and more files, it's very difficult for people to organize these data and to find what they want to use. then database came out. data can be organized by relationship and store in the database, people use index to speed up the search process.

 

Nowadays, email is widely used, in some company, email replaced the telephone, has become the most useful communication tool. the workflow is based on mail delivery, if the mail server down, then employee can not work.

 

What will happen next?