07 External Memory - MetaLab
07 External Memory - MetaLab 07 External Memory - MetaLab
Tracks and Cylinders
Classification of disk based on headmechanism• Tradiditonal R/W head has been positioned a fixeddistance above the platter-allowing an air gap.• Second is a head mechanism that actually comes intophysical contact with the medium during R/Woperation- used in floppy disk.• Floppy Disk▫ 8”, 5.25”, 3.5”▫ Small capacity• Up to 1.44Mbyte (2.88M never popular)▫ Slow▫ Universal▫ Cheap▫ Obsolete?
- Page 1 and 2: William StallingsComputer Organizat
- Page 3 and 4: Magnetic Disk• Disk - a circular
- 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: Multiple Platters
- 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
Classification of disk based on headmechanism• Tradiditonal R/W head has been positioned a fixeddistance above the platter-allowing an air gap.• Second is a head mechanism that actually comes intophysical contact with the medium during R/Woperation- used in floppy disk.• Floppy Disk▫ 8”, 5.25”, 3.5”▫ Small capacity• Up to 1.44Mbyte (2.88M never popular)▫ Slow▫ Universal▫ Cheap▫ Obsolete?
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