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Hard Disk القرص الصلب

Hard Disk القرص الصلب. Construction of the Hard Disk. Tracks and Sectors. The Difference Between Tracks and Cylinders. Platter Size.

kieran-shaffer
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Hard Disk القرص الصلب

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  1. Hard Disk القرص الصلب

  2. Construction of the Hard Disk

  3. Tracks and Sectors

  4. The Difference Between Tracks and Cylinders

  5. Platter Size A platter from a 5.25" hard disk, with a platterfrom a 3.5" hard disk placed on top of it forcomparison. The quarter is included for scale (andstrangely, fits right in the spindle hole for bothplatters... isn't that a strange coincidence?

  6. Hard Disk Operational Overview

  7. Read/Write Heads A pair of mated head sliders with their platter removed.You can see that the tension of the head arms has causedthem to press against each other.

  8. Hard Disk Read/Write Head Technologies

  9. سطح القرص This illustration gives you some idea of just how small the flyingheight of a modern hard disk is (and today's hard disks haveflying heights significantly lower than 3-7 millionths of an inch!

  10. Hard Disk Head Sliders, Arms and Actuator

  11. Hard Disk Connectors and Jumpers Some of the connectors and jumper pins on a3.5", 36 GB, 10,000 RPM SCSI Cheetah drive.

  12. Connectors Types • IDE Connectors • SCSI Connectors • SATA Connectors

  13. IDE Connectors

  14. SATA Connectors

  15. SCSI Connectors

  16. Data Interface Connector A standard hard disk IDE/ATA data interface connector.If you look closely you can see markings for pins #1, #2, #39 and #40.A 50-pin SCSI interface connector looks identical except that ithas 25 columns of pins instead of 20 (they look so much alike thatgetting the two mixed up is common). A 68-pin SCSI interfaceconnector is pictured on the parent page of this page

  17. IDE/ATA Configuration Jumpers Jumper block for an IDE hard disk.The jumpers are labeled "MA" (master),"SL" (slave) and "CS" (cable select). OtherIDE drives will have slightly differentjumper configuration or placement.

  18. Jumpers

  19. Hard Disk Logic Board

  20. Hard Disk Cache and Cache Circuitry

  21. Cache Size The cache chip from a Seagate Barracuda hard disklogic board. This chip is the entire cache: it's a 4 Mib chip,which is 512 kiB, the size of the cache on this drive. Somecaches use more than one chip, especially the larger ones.

  22. Removable Hard Disk Trays

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