Chapter 6

Storage

Memory vs. Storage

• Memory
• Volatile
• Non-Volatile
• Storage
• Reading
• Writing
• Access Time
• Capacity
• Characteristics of Magnetic Media
• Read/write
• Formatting
• Tracks
• Sectors
• Clusters
• Density
• FAT’s

Floppy Disks

• Characteristics of Floppy Disk
• Write-Protect Notch
• Floppy Disk Drives
• Downward Compatible
• Shutter
• Read/Write heads
• High-Capacity Floppy Disks
• SuperDisk drive
• Zip drive

Hard Disks

• Platter
• Fixed Disks
• Characteristics of Hard Disk
• Low-level formats
• Partitions
• High-Level format
• How a hard disk works
• Cylinder
• Head Crash
• Disk Cache
• Removable Hard Disks
• Hard Disk Controllers
• IDE
• SCSI
• RAID
• Level 1 – mirroring
• Striping

Compact Disks

• CD-ROM
• Data transfer rate
• PhotoCD
• CD-R
• CD-RW
• DVD-ROM
• DVD-ROM
• DVD-R
• DVD-RAM

Tapes

• Magnetic Tapes
• Sequential Access
• Tape Drives/Tape Cartridges

PC Cards

• Type III cards

Other Types of Storage

• Smart Cards
• E-Money/Digitial Cash
• Microfilm/microfiche

Enterprise Storage Systems & Data Warehouse

• Storage Area Networks (SAN)
• Data Warehouses