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Computer Architecture Lecture 6: Basics of I/O and Storage Systems Rodney Van Meter 2013/12/24

Computer Architecture Lecture 6: Basics of I/O and Storage Systems Rodney Van Meter 2013/12/24 rdv@sfc.wide.ad.jp http:// www.sfc.wide.ad.jp /aqua/. Platter, Spindle, Arm, and Head. Outline. What's a Disk Drive? The Importance of a Disk Drive The Insides of a Disk Drive

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Computer Architecture Lecture 6: Basics of I/O and Storage Systems Rodney Van Meter 2013/12/24

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  1. Computer Architecture Lecture 6: Basics of I/O and Storage Systems Rodney Van Meter 2013/12/24 rdv@sfc.wide.ad.jp http://www.sfc.wide.ad.jp/aqua/

  2. Platter, Spindle, Arm, and Head

  3. Outline What's a Disk Drive? The Importance of a Disk Drive The Insides of a Disk Drive The Access Time Gap Disk Drive Trends A Little History The Basics of a Bus Homework

  4. What’s a Disk Drive?

  5. What’s Important About a Disk Drive? Expensive Consume lots of power Performance bottleneck Fragile But they hold your data without power (they are nonvolatile), for a long time! Lots and lots of data!

  6. Moore’s Law

  7. Growth of Capacity Over Two Decades

  8. Global Disk Shipments (in TB)

  9. What’s a Disk Drive?

  10. Anatomy of a Hard Drive

  11. The Platter(s)

  12. The Platters: 3 Disks, 6 Arms & Heads

  13. Platter, Spindle, Arm, and Head

  14. Arm, Slider & Read/Write Head

  15. The Head on the Slider

  16. Magnetic Media & R/W Head

  17. Cyclinder, Head, Sector (CHS)

  18. Video: Arm Moving Video courtesy of Jun Takei, Intel

  19. Video: Arm Moving (2) Video courtesy of Jun Takei, Intel

  20. Growth of Capacity Over Two Decades

  21. Transfer Rate

  22. Access Time Gap

  23. A Little History: The RAMAC

  24. A Little History: The RAMAC

  25. RAMAC Delivery!

  26. Bus Shared bandwidth Requires addressing Transactions Arbitration: priority, fairness Limitations: width, length (capacitance, 電気容量) Types: memory, peripheral Standardization

  27. Buses: System Diagram

  28. Buses: System Diagram

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