They quickly learn that a slow interface between the CPU and drive becomes the primary obstacle in obtaining data quickly and efficiently. As a power user, you need to ensure this vital element outperforms the majority of the system competition. If not, its time to upgrade. But even the fastest CD-ROM drives remain much slower than hard drive access. Ample hard drive space allows you to easily transfer frequently used data off the CD to the faster magnetics of the hard drive.
Hard drives slow down as they fill up.
Regular maintenance must be conducted to clean unneeded files off the drive to protect valuable free space. And don't forget to defragment your hard drive at least once per month. Before you proceed, cleanse your browser cache, clean out the TEMP directories and empty the Recycle Bin. This all depends on your trading intensity. If you do extensive system testing, your databases may not fit in one place.