Western digital blue 750gb 5400prm sata 6gbs 8mb cache 25 inch hard drive internal massive capacity storage capacity for 25 inch form factor drives has arrived at a realm once thought to be impossible ndash up to 1 tb for mobile storage whether they are in an external drive or a notebook computer wd scorpio blue sata drives continue to offer the highest capacity for space hungry operating systems with plenty of room left over for photos music and video quiet in a notebook drive silence