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Storage, Multimedia and File Organization CIS 105
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Storage and Multimedia:  The Facts and More
Secondary Storage ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Memory  vs.  Storage   (Volatile)  (Non-volatile) ,[object Object],[object Object],Access time =  nanoseconds   (billionths of a second) Access time =  milliseconds   (thousandths of a second)
Cost and Speed
Formatting Formatting is the process of preparing a disk, hard disk, or CD for reading or writing. Formatting organizes the disk into storage locations called  tracks   ( a band that forms  a circle on the disk). Formatting breaks the tracks into  sectors  which are small pie-shaped areas. Data stored in sectors must be retrieved for use and placed in memory.  The time required to access and retrieve data is called  access time . Tracks Sectors (Cluster: 2-8 sectors)
Care of  Floppy Disks
Hard Disk Characteristics ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
RAID  (Redundant Array of Independent Disks)   Can be Combined (RAID LEVEL 0)
Compact Disks ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Digital Versatile Disk (DVD) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
CDs and DVDs  ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Disk Terms Superdisk, Zip, USB Flash High Capacity Portable Disks/Drives Small opening in floppy disk with tab to slide to cover/expose notch; indicates whether info can be written to disk Write protect notch Table of info used to locate files on a disk FAT (File Allocation Table) # sides (2) x tracks (80) x sectors/track (18) x 512 (bytes/sector) = 1.44MB Density 2-8 sectors; smallest unit of space to store data Cluster Pie-shaped arcs making up track. 512 bytes;  Sector Narrow recording band; forms circle on disk surface Track Process of preparing disk by organizing into locations (tracks/sectors) Formatting Portable, inexpensive, 3.5” Floppy disk/diskette
Storage Strategies ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Trivia Storage vs Memory? 3 Types of RAID? Storage Strategies? Temporary  vs future; Speed Enterprise Storage Systems Data Warehouse Mirrored Striped Combination
Multimedia ,[object Object],[object Object]
Organizing and Accessing Data ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
File Organization ,[object Object],[object Object],[object Object],[object Object]
Sequential File Organization ,[object Object],[object Object],[object Object],[object Object]
Direct File Organization ,[object Object],[object Object],[object Object],[object Object]
Indexed File Organization ,[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],If asked, can you explain…
Questions? ? ? ? ? ?
Terms to Know: Storage, Multimedia & File Management ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Sources ,[object Object],[object Object],[object Object]

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Ie Storage, Multimedia And File Organization

  • 1. Storage, Multimedia and File Organization CIS 105
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  • 6. Formatting Formatting is the process of preparing a disk, hard disk, or CD for reading or writing. Formatting organizes the disk into storage locations called tracks ( a band that forms a circle on the disk). Formatting breaks the tracks into sectors which are small pie-shaped areas. Data stored in sectors must be retrieved for use and placed in memory. The time required to access and retrieve data is called access time . Tracks Sectors (Cluster: 2-8 sectors)
  • 7. Care of Floppy Disks
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  • 9. RAID (Redundant Array of Independent Disks) Can be Combined (RAID LEVEL 0)
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  • 13. Disk Terms Superdisk, Zip, USB Flash High Capacity Portable Disks/Drives Small opening in floppy disk with tab to slide to cover/expose notch; indicates whether info can be written to disk Write protect notch Table of info used to locate files on a disk FAT (File Allocation Table) # sides (2) x tracks (80) x sectors/track (18) x 512 (bytes/sector) = 1.44MB Density 2-8 sectors; smallest unit of space to store data Cluster Pie-shaped arcs making up track. 512 bytes; Sector Narrow recording band; forms circle on disk surface Track Process of preparing disk by organizing into locations (tracks/sectors) Formatting Portable, inexpensive, 3.5” Floppy disk/diskette
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  • 15. Trivia Storage vs Memory? 3 Types of RAID? Storage Strategies? Temporary vs future; Speed Enterprise Storage Systems Data Warehouse Mirrored Striped Combination
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  • 23. Questions? ? ? ? ? ?
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