Digital Storage

1. Hard Drives : Hard disk drive (HDD) contains 1 / more inflexible,circular platters that use magnetic particles to store data,instructions,and information.

1.1. Characteristics of hard disk:

1.1.1. Tracks

1.1.2. Sectors

1.1.3. Platters

1.1.4. Form factor

1.1.5. Read/write head

1.1.6. Revolutions per minute

1.2. Example of hard drives

1.2.1. SSD (solid state drive)

1.2.1.1. Advantages: Faster access times,faster transfer rates,more durable and lighter weight.

1.2.2. External hard drive

1.2.2.1. Is a separate freestanding storage device that connects with a cable to a USB port.

1.2.3. RAID (redundant array of independent disks)

1.2.3.1. Is a group of two / more integrated hard drives.

2. Portable Flash Memory Storage

2.1. A memory card is a removable flash memory storage device that you insert and remove.

2.1.1. For example : SDHC,SDXC,miniSD,microSDHC,microSDXC,CF,xD Picture Card,Memory Stick PRO Duo,M2.

3. Cloud Storage

3.1. Is an internet service that provides storage to computer or mobile device users.

3.2. Example

3.2.1. Optical Discs

3.2.1.1. CD-ROM

3.2.1.2. CD-R

3.2.1.3. CD-RW

3.2.1.4. DVD-ROM

3.2.1.5. DVD-R+DVD+R

3.2.1.6. DVD-RW, DVD+RW and DVD+RAM

3.2.1.7. DVD-RW, DVD+RW and

4. Other Types of Storage

4.1. Magnetic stripe card has a magnetic stripe that contins information

4.2. A smart card stores data on an integrated circuit embedded in the card.

4.3. RFID tag consists of an antenna and a memory chip that contains the information.

4.4. NFC-enabled device contains an NFC chip and contains information to be transmitted.

5. Is the physical material on which a computer keeps data,information,programs,and application.

6. Example of storage

6.1. Storage device

6.2. An illustration of of volatility

6.3. Screen display volatile

6.4. Contents of most RAM volatile

6.5. Contents of storage Nonvolatile

7. Enterprise Storage

7.1. Allows large organizations to manage and store data and information using devices intended for heavy use,maximum efficiency,and maximum availability.

7.2. Network attached storage (NAS)

7.3. Storage area network (SAN)

7.4. Tape