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STORAGE DEVICE

This article explores the key components of hard disk drives (HDD), including platters, read-write heads, arms, and logic boards. It covers the structure of platters, composed of substrate materials and magnetic coatings, and explains the role of read-write heads in data retrieval. Additional topics include the spindle motor's function, the significance of connectors and jumpers, and the integrated cache's purpose. Insights into hard disk drive geometry, including heads, cylinders, and sectors are also discussed, highlighting how data is organized and stored efficiently.

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STORAGE DEVICE

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Presentation Transcript

  1. STORAGE DEVICE HARD DISK

  2. Key component of hard disk • Platters and media • Read –Write heads • Heads slider, arms and actuator • Spindle motor • Connectors and jumpers • Logic board • Integrated cache

  3. PLATTERS AND MEDIA • Platters are composed of two main substances, a substrate material that forms the bulk of the platter and gives it structure and rigidity, and a magnetic media coating which actually holds the magnetic impulses that represent the data.

  4. Read –Write heads • Disk read/write heads then again convert back the magnetic pulses stored on the hard disk into bits when data is read from the hard disk.

  5. HEADS SLIDER, ARMS AND ACTUATOR • Heads slider, arms and actuator is the device use to position the head arms to different tracks on the surface on the platter.

  6. Spindle motor • The Spindle motor provide stable, reliable and consists turning power to the hard disk to function it properly.

  7. Connectors and jumpers • Jumpers pins a set of pins, across two of which the jumper is placed to make a specific connection. • Power connector • Data interface connector • Ide – ata configuration jumpers • Scsi- configuration jumpers

  8. LOGIC BOARD • The Logic board is responsible to control hard disk function, and as hard disk become faster and more function are added to the Logic board.

  9. INTEGRATED CACHE • The propose of this cache is similar to that of other cache in the computer.

  10. Geometry of hard disk drive • hard disk drive of geometry: • Heads • Cylinders • Sectors per track • Write precompensation • Landing zone

  11. Heads • The heads of hard disk drive represents of sides of all the platters the store data. • Cylinders • All the data on a hard disk is stored on concentric circles on the surface each heads. • Sectors per track • The tracks into small arcs called sectors, can hold 512 bytes of data. The number of tracks present on a sector. Sectors per tracks at 63.

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