ABCs of Disk Drives. Sudhanva Gurumurthi. Hard Disk Drive (HDD) Components. Electromechanical Rotating disks Arm assembly Electronics Disk controller Cache Interface controller. HDD Organization. Arm Assembly. Spindle. Cylinder. Head. Arm. Platter. Track. HDD Organization.
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Source: Hitachi GST Technology Overview Charts, http://www.hitachigst.com/hdd/technolo/overview/storagetechchart.html
Soft underlayer (mirrors) write field
and allows domains to be closer.
Magnetic domains oriented in the
direction in which head travels