Head Disk Assembly

Also found in: Medical, Acronyms.

Head Disk Assembly

(hardware, storage)
(HDA) A sealed, high capacity mainframe hard disk with integral heads, as opposed to a removable disk.
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(1) See HD audio.

(2) (Head Disk Assembly) The mechanical components of a disk drive (minus the electronics), which include the actuators, access arms, read/write heads and platters.
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