(computing, dated) A hard disk.

Alternative spelling of optical disc

(mathematics) A set of points on a plane whose distance from a given point is less than or equal to one.

Alternative form of Nipkow disk

(computing) A system using multiple hard drives for the sharing or replication of data in order to increase data integrity, fault-tolerance or throughput.

(computing) A hard drive or hard disk; a fixed disc drive containing rigid disks.

(computer hardware) A floppy drive; a disk drive for floppy disks.

plural of hard disk drive

plural of floppy disk drive

plural of optical disk drive