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1. Storage device

1.1. reading

1.1.1. transferring items from a storage medium into memory

1.1.2. from a storage medium into memory.

1.2. writing

1.2.1. transferring items from memory to a storage medium

1.2.2. from memory to a storage medium.

2. Access time

2.1. the amount of time to take a storage device to storage medium.

2.2. the time required to send an item from memory to the processor.

3. Hard Disks

3.1. storage data

3.1.1. perpendicular recording

3.1.2. longitudinal recording

3.2. characteristics

3.2.1. Sectors and Tracks

3.2.2. Capacity

3.2.3. Revolutions per Minute

3.2.4. Cylinders

3.2.5. Transfer Rate

3.2.6. Access Time

3.2.7. Platters

3.2.8. Read/Write Heads

3.3. Formatting

3.3.1. process that divine the disk into tracks or sectors

3.4. RAID(redundant array of independent disks)

3.4.1. a groups of two or more integrated dard disks

3.5. NAS(network attached storage)

3.5.1. a server connected to a network with the sole purpose of providing storage

3.6. external hard disk

3.6.1. free standing hard disk

3.7. removable hard disk

3.7.1. can insert and remove from a drive

4. Flash Memory Storage

4.1. SSDS(Solid state drives)

4.1.1. faster accessstie , generate less heat and consume less power,lastlonger

4.2. memory card

4.2.1. CompactFlash ( CF)

4.2.2. Secure Digital ( SD)

4.2.3. microSD

4.2.4. Secure Digital High Capacity (SDHC)

4.2.5. microSDHC

5. Access time

5.1. The amount of time it takes a storage device to locate an item on a storage medium

5.2. The time required to deliver an item from memory to the processor

6. Hard Disks

6.1. store data

6.1.1. longitudinal recording

6.1.2. perpendicular recording

6.2. Characteristics

6.2.1. Capacity

6.2.2. Platters

6.2.3. Read/Write Heads

6.2.4. Cylinders

6.2.5. Sectors and Tracks

6.2.6. Revolutions per Minute

6.2.7. Transfer Rate

6.2.8. Access Time

6.3. Formatting

6.3.1. the process of dividing the disk into tracks and sectors

6.4. RAID (redundant array of independent disks)

6.4.1. a group of two or more integrated hard disks

6.5. A network attached storage (NAS)

6.6. external hard disk

6.6.1. frees tanding hard disk

6.7. removable hard disk

6.7.1. can insert and remove from a drive

7. Flash Memory Storage

7.1. memory card

7.1.1. microSD

7.1.2. Memory Stick Micro (M2)

7.1.3. Secure Digital High Capacity (SDHC)

7.1.4. memory card

7.1.5. Secure Digital ( SD)

7.1.6. Memory Stick

7.1.7. xD Picture Card

7.1.8. microSDHC

7.2. USB flash drives

7.2.1. plug into a USB port on a computer or mobile device

7.3. ExpressCard module

7.3.1. a removable device that fits in an ExpressCard slot

7.3.2. Developed by the PCMCIA

7.3.3. Commonly used in notebook computers

7.4. Solid state drives (SSDs)

7.4.1. Faster access time,Generate less heat and consume less power

8. Cloud storage

8.1. an Internet service that provides storage to computer users

9. Optical Discs

9.1. Typically store software, data, digital photos, movies, and music

9.2. Read only vs. rewritable

9.3. VCD

9.3.1. CD‐RW

9.3.2. CD‐ROM

9.3.3. CD‐R

9.4. DVD

9.4.1. DVD‐ROM

9.4.2. DVD‐RW, DVD+RW, and DVD+RAM

10. Other Types of Storage

10.1. Tape

10.1.1. a magnetically coated ribbon of plastic capable of storing large amounts of data and information

10.2. magnetic stripe card

10.2.1. reading and writting data and information on a tape

10.3. micrefilm and micrpfiche

10.4. enterprise storage

10.5. smart cards

10.5.1. stores data on a thin microprocessor embedded in the card