Definition of "hard disk" []

• A rigid magnetic disk fixed permanently within a drive unit and used for storing computer data. Hard disks generally offer more storage and quicker access to data than floppy disks do. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "With the Laplink, I could dump the contents of one computer's hard disk to the hard disk in the portable."
• "Flash-based memory is still too expensive to be a data center's primary storage technology, but solid-state disks may ultimately replace mechanical hard disk drives, says Hitachi Data Systems 'CTO"
• "SSD could ultimately replace hard disk drives, Hitachi CTO says"