Storage

1. Capacity

1.1. storage device

1.1.1. Hard Disks

1.1.1.1. Capacity

1.1.1.2. Platters

1.1.1.3. Read/Write Heads

1.1.1.4. Cylinders

1.1.1.5. Sectors and Tracks

1.1.1.6. Revolutions per Minute

1.1.1.7. Transfer Rate

1.1.1.8. Access Time

1.1.2. Flash Memory Storage

1.1.2.1. CompactFlash (CF)

1.1.2.2. Secure Digital (SD)

1.1.2.3. Secure Digital High Capacity (SDHC)

1.1.2.4. microSD

1.1.2.5. microSDHC

1.1.2.6. xD Picture Card

1.1.2.7. Memory Stick

1.1.3. Cloud Storage

1.1.3.1. is an Internet service that provides storage to computer users

1.1.4. Optical Discs

1.1.4.1. CD-ROM

1.1.4.2. CD-R

1.1.4.3. CD-RW

1.1.5. Other Types of Storage

1.1.5.1. Tape

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

1.1.5.2. Magnetic stripe cards and smart cards

1.1.5.2.1. contains a magnetic stripe that stores information

1.1.5.3. Microfilm and microfiche

1.1.5.3.1. store microscopic images of documents on a roll or sheet flim

1.1.5.4. Enterprise storage

2. Device of Hard disks

2.1. external hard disk

2.2. removable hard disk

2.3. Internal and external hard disks