DIGITAL STORAGE

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DIGITAL STORAGE by Mind Map: DIGITAL STORAGE

1. 1.Hard drives(hard disk)

1.1. contain circular platters that use magnetic particles to store data and information.

1.1.1. Storage determined by number of platters, composition of magnetic coating, density and whether disk use longitudinal of perpendicular recording.

1.1.1.1. characteristics

1.1.1.1.1. tracks

1.1.1.1.2. Sector

1.1.1.1.3. Pattern

1.1.1.1.4. Form factor

1.1.1.1.5. Read/write head

1.1.1.1.6. Revolution per min

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

2.1.1.2. -Faster transfer rates

2.1.1.3. -Quieter operation

2.1.1.4. -More durable

2.1.1.5. -Lighter weight

2.1.1.6. -Less heat generation

2.1.1.7. -Longer life

3. 3.Memory

3.1. removable flash memory that insert and remove from a lot slot in a device.

3.1.1. Example

3.1.1.1. mini SD

3.1.1.2. micro SDHC

3.1.1.3. CF

3.1.1.4. xd picture card

4. 4. External Hard drive

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

5. 5.Cloud Storage

5.1. An internet service that provide storage to computer.

6. 6. Optical disc

6.1. consist of flat, round that written and read by laser. Store item in a single track (divided into sector) that spirals from center to edge of disc.

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. Access time

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

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

8. 8. Enterprice Storage

8.1. repository for business information that provides common data management and protection, as well as data sharing function, through connections to numerous (and possibly dissimilar) computer systems.

8.1.1. Server 1: Network attached storage (NAS)

8.1.1.1. server that placed on network with sole purpose of providing storage to users, computer and devices with network.

8.1.2. Server 2: Storage area network (SAN)

8.1.2.1. high speed network with sole purpose of providing storage to other attached server.

8.1.3. Tape

8.1.3.1. magnetically coated ribbon of plastic capable of storing large amount of data and information, tap drove reads and writes data and information on magnetic tape

9. Magnetic stripe card

9.1. A magnetic stripe that contains information.

10. Smart card

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

11. RFID tag

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

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