DIGITAL STORAGE

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DIGITAL STORAGE by Mind Map: DIGITAL STORAGE

1. 1. Hardisk

1.1. contains one or more inflexible, circular platters that use magnetic particle and information.

1.1.1. Also called as hard disk drive (HDD)

1.1.1.1. Determine by number of platters the hard disk contains

1.1.1.2. Composition of the magnetic coating on platters.

1.1.1.2.1. Characteristics

1.1.1.3. Also determine by density

2. 2. SSD (Solid State Drive)

2.1. -is a flash memory storage device that contains its own processor to manage its storage

2.1.1. Advantages

2.1.1.1. -Faster access times -Faster transfer rates -Quieter operation -More durable -Lighter weight -Less heat generation -Longer life -Defragmentation not required

3. 3. External Hard drive

3.1. -is aseparate freestanding storage device that connects with a cable to a USB port or other port on a computer or mobile device

4. 4. Memory card

4.1. - is a removable flash memory storage device that you insert and remove from a slot in a computer, mobile device, or card reader/writer.

4.1.1. SDHC

4.1.2. SDXC

4.1.3. miniSD

4.1.4. microSDHC

5. 5. Cloud Storage

5.1. An internet service that provide storage to computer.

6. 6. Optical Discs

6.1. Consists of a flat, round, portable disc made of metal, plastic, and lacquer.

6.1.1. - read and written by laser.

6.1.1.1. CD-ROM can be read but not written

6.1.1.2. CD-R an optical disc

6.1.1.3. CD-RW an erasable multisession disc

6.1.1.4. DVD-R can be write once but not erase

6.1.1.5. DVD-RW users can write on multiple times.

7. 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

7.1.1. Network attached storage (NAS)

7.1.1.1. A server that is placed on a network with the sole purpose of providing storage to users, computers, and devices attached to the network.

7.1.2. Storage area network (SAN)

7.1.2.1. A high-speed network with the sole purpose of providing storage to other attached servers

7.1.3. Tape

7.1.3.1. A magnetically coated ribbon of plastic capable of storing large amounts of data and information

8. Magnetic stripe card

8.1. A magnetic stripe that contains information.

9. Smart card

9.1. Store data on an integrated circuit embedded in card.

10. RFID tag

10.1. consists of an antenna and memory chip that contains the information to be transmitted via radio waves.

10.2. read the radio signal and transfers the information to computer.

11. NFC chips

11.1. Tag that contains a chip and an antenna that contains information to be transmitted.

12. 8. Access time

12.1. Amount of time it takes a storage device to locate an item

12.2. Time required to deliver an item from memory to processor.