For those who have been waiting to upgrade their laptop hard disk, it maybe the right time as the hard disk manufacturer Western Digital said it is now shipping its new WD Scorpio 2.5-inch Serial ATA (SATA) hard drives with a whooping capacity of 320GB. This drive is able to deliver a 3 Gb/s transfer rate. With the coming of High definition content, new and much bigger software its now good to have more hard disk space.