Toshiba has announced a 100GB hard drive for notebooks, which offers 20GB more capacity than the company’s current biggest drives for portables. Toshiba said it also made improvements that help increase the new drive’s shock resistance and reduce its power consumption and noise production. Samples of the drive won’t be available until May (once a company releases samples, it takes several months for a product to become widely available). Toshiba did not announce pricing.