While the deal was too small to impress the markets with respect to Fujitsu, whose shares fell 2.51% to 621 yen, it was a different story for Oki, which rose 0.25% to 400 yen. Oki has announced an assault on Japan's competitive server marke t , dominated by Fujitsu with 20.5% market share. IBM has 18.9%. Server shipments in Japan are worth 770bn yen a year.