Japanese electronics manufacturer Toshiba has agreed to buy over Fujitsu's hard disk drive (HDD) business, in a move aimed at expanding its footprint in the enterprise storage market. In a statement released Tuesday, Fujitsu did not reveal how much the deal is worth but said the transaction is targeted to be completed in the first quarter of its fiscal 2009, ending June 30 this year. Under the agreement, Fujitsu will transfer all its HDD-related businesses and functions to the new company, including HDD design, development, manufacturing and sales. It will retain a 20 percent share for "a certain period of time", before the new HDD business unit becomes a wholly-owned subsidiary under Toshiba, according to the statement. The deal will enable Toshiba to "reinforce" its position as a vendor of small form-factor HDDs, commonly used in consumer electronics and mobile devices, the company said.