Dynamic expansion of form input fields

[bhowana]

I have been working on a web-based device management system for work, and I have ran into an issue with presenting the user the option of adding more fields as needed. For example, some devices will have say 4x drives, 6x ram modules, etc. My options so far are...

• Hard-code the MySQL Database to have X amount of each type of field.4 disk drive fields, 6 ram module fields, etc. However, most machineswill have less than this, and some may have considerably more.
• Create a table for each type that will possibly have more than one
  value. Such as a device_drives table, device_memory table, etc.

Would there be a more efficient (and dynamic) method of doing this? Both methods I have considered seem pretty silly. Here is a visual example of it, the red arrows representing icons that the user could click to add another of that type.