Security

• Static IPs only use a single, exact address. In effect, static IDs are more prone to hacking attempts than dynamic IPs. Moreover, you cannot easily change a static IP once it has been hacked -- making your system extremely prone to continuous attack. It is important to have preventive measures in place before getting a static IP, such as Internet security suites and router firewalls.
  
  

Uptime

• Static IPs have the advantage in the quality and speed of hosting servers and running file transfer protocol sites. Conversely, servers based on a static IP have to be consistently on to host these functions. While most commercial servers are on all the time, the costs of constantly running a computer can be significant for a single person over time.
  
  

Configuration

• Most computers come with Dynamic Host Configuration Protocol settings on by default. To set a static IP, the process is manual and relatively complex; in some cases, you may need external software to secure a static IP address. Moreover, many consumer-level ISPs do not support static IPs.
  
  

Limited Location

• When you obtain a static IP address for your computer, this address is matched with the Internet connection you were on at the time. Upon doing so, the address is already "used" -- you typically cannot get an Internet connection anywhere else without removing your static IP settings. This is particularly complex for people in Wide Lan Areas -- such as schools. In a typical campus, each area of the school uses a different subset of the overall Internet connection. If you're located at your dorm, for example, your static IP will not connect with the Internet in the other areas of the school.
  
  

Upgrades

• Computers are a rapidly evolving technology; a static IP computer running a server may become obsolete within a few years. Transferring the server settings from a static IP computer to a new computer is relatively complex; you would need to reserve the same IP on the new computer while losing the minimum amount of uptime. It is highly recommended to invest in an easily upgradeable computer to run a static IP server; as powerful desktop servers and supercomputers are typically designed for static IPs.