title: How can Amazon EC2 Server change instance type without moving data file?
body: <p>Currently, I am using Amazon EC2 C1-medium server to run my service. I heard that Amazon EC2 server made a new type server called, Amazon EC2 C3. Amazon EC2 C3 offers SSD hard disk. </p>
  
  <p>I was wondering I can change Instance Type without moving my old data files, and I believe that they can do it because they are using normal hard disk. However, I found out that I can change the instance type even though I want to change my old server to SSD hard disk. </p>
  
  <p>I didn't change the type yet because I worry about losing server data. I read documents but couldn't find the answer. How does it work and is it safe to do it?</p>