Refers to a site in a where many mass storage devices can be internally installed. Usually a 5.25in-wide 1in-tall hole in a computer case. The number of drive bays in a computer determines how many such devices can be internally installed. The other common size is 3.5in. Bays are described as either internal or exposed. An internal bay is meant for hard disk drives, an exposed bay for removable media drives, such as a CD-ROM, tape backup or floppy disk unit. Some manufacturers use the terms hidden and accessible in place of internal and exposed.
