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Chapter 4 – Page 1QM-130Dr. Sulaiman Al-Rafee Chapter 4 – Storage Chapter Summary Properties of Storage Systems Magnetic Disks Optical Disks Other types of Storage Systems Comparing Storage Systems
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Chapter 4 – Page 2QM-130Dr. Sulaiman Al-Rafee Properties of Storage Systems (130) Physical Parts Storage Device and Storage Medium Internal and External devices Read/Write head Non-Volatility Removable vs. Fixed media Random vs. Sequential Access Logical vs. Physical Representation
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Chapter 4 – Page 3QM-130Dr. Sulaiman Al-Rafee Magnetic Disk Systems 1. Floppy Disks (134) Physical Properties Tracks, Sectors, and Clusters File Allocation Table (FAT) Formatting Using Floppy disks Super diskettes Zip Drives Super Disk HiFD
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Chapter 4 – Page 4QM-130Dr. Sulaiman Al-Rafee Magnetic Disk Systems 2. Hard Disks (138) Physical Properties Hard Disk Addressing Reading and Writing Data Read/Write head Disk Access Time
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Chapter 4 – Page 5QM-130Dr. Sulaiman Al-Rafee Magnetic Disk Systems Hard Disks (continued) Disk Cache Disk Standards ATA/IDE SCSI Partitioning and FAT32 Partition Removable Hard Disk Systems
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Chapter 4 – Page 6QM-130Dr. Sulaiman Al-Rafee Magnetic Disk Systems Hard Disks (continued) Hard Disk systems for Notebook Computers Hard Disk systems for Large Computer Systems RAID –Disk Stripping –Disk Mirroring
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Chapter 4 – Page 7QM-130Dr. Sulaiman Al-Rafee Optical Discs CDs (146) CD-Rom Recordable (CD-R) ReWritable (CD-RW) DVDs (Digital Video Disk or Digital Versatile Disk) DVD-Rom ReWritable DVDs DVD-RAM, DVD+RW
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Chapter 4 – Page 8QM-130Dr. Sulaiman Al-Rafee Other Types of Storage Systems Magnetic Tape Systems (149) Online Storage Smart Cards Flash Memory Devices Flash Memory Sticks Flash Memory Cards Flash Memory Drives
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Chapter 4 – Page 9QM-130Dr. Sulaiman Al-Rafee Comparing Storage Devices Floppy Disks SuperDisk/HiFD Disk/Zip Disk CD-Rom DVD-Rom Removable Hard Disks Flash Drives
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Chapter 4 – Page 10QM-130Dr. Sulaiman Al-Rafee Chapter 4 – Storage Chapter Summary Properties of Storage Systems Magnetic Disks Optical Disks Other types of Storage Systems Comparing Storage Systems
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