Hitachi is planning to double production of hard disk drives at its plant in Thailand, the company has announced. ]

Production of the company's 4GB capacity 1in Microdrive disk drives which are found in digital music players such as Apple's iPod Mini, will see the largest increase in percentage terms.

The company wouldn't be any more specific on which companies or products, if any, are primarily driving demand, although some signs point to Apple and its iPod Mini.

Apple launched the iPod Mini in the United States in February with 100,000 preorders placed for the $249 music player. The company was due to follow with a worldwide launch in April, however in March was forced to delay that to July because of problems meeting demand.