07 External Memory - MetaLab
07 External Memory - MetaLab 07 External Memory - MetaLab
from uniten.edu.my
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12.07.2015
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Types of External Memory• Magnetic Disk• Optical• Magnetic Tape
Magnetic Disk• Disk – a circular platter constructed of nonmagneticmaterial called substrate• Disk is coated with a magnetizable material.• Substrate used to be aluminium• Now glass▫ Improved surface uniformity• Increases reliability▫ Reduction in surface defects• Reduced read/write errors▫ Better stiffness – to reduce disk dynamics▫ Greater ability to withstand shock and damage
- Page 1: William StallingsComputer Organizat
- Page 5 and 6: Inductive Write MR Read
- Page 7 and 8: Disk Data Layout
- Page 9 and 10: Disk Layout Methods Diagram
- Page 11 and 12: Multiple zone recording (MZR)• To
- Page 13 and 14: Removable or Not• Removable disk
- Page 15 and 16: Multiple Platters
- Page 17 and 18: Classification of disk based on hea
- Page 19 and 20: Disk performance parameters• The
- Page 21 and 22: Optical Storage CD-ROM• Originall
- Page 23 and 24: Continue..• Data on CD/CD-Rom is
- Page 25 and 26: Other Optical Storage• CD-Recorda
- Page 27 and 28: DVD - technology• Multi-layer•
- Page 29 and 30: Magnetic Tape• Tape system use th
Types of <strong>External</strong> <strong>Memory</strong>• Magnetic Disk• Optical• Magnetic Tape
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