Database capacity planning
In recent years, the cost of disks has dramatically decreased and the capacity and speed of disks has increased. Information system managers who order disk capacity have shifted from purchasing disk arrays that are dedicated to a particular database server and project to the use of Storage Area Networks (SANs).
For information about estimating your initial disk requirements, see Disk estimation for Sterling Call Center. By using this worksheet and then tracking your actual database usage over time, disk growth will be easier to anticipate.