DIGITAL STORAGE

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DIGITAL STORAGE by Mind Map: DIGITAL STORAGE

1. Access Times

1.1. Amount of time that take a storage device to located and item. Amount of time required to deliver file from the memory to processer.

2. Storage medium is the physical material on a computer which keep data, information progarm and application.

2.1. Example of Storage

2.1.1. An illustration of volatility

2.1.2. Screen display volatile

2.1.3. Content of the most RAM volatile

2.1.4. Contents of storage Nonvolatile

3. Enterprise Storage

3.1. Repository for business information that provides common data management and protection as well as data sharing functions, through connection to numerous ( and possibly dissimilar) computer system

3.1.1. Network attached Storage (NAS)

3.1.2. Storage area network ( SAN )

3.1.3. Tape

4. Cloud stoge keeps information on server on internet.

5. Storage device is the hardware that record or retrieves item to and from storage media

5.1. Hard disk (Hard Drive)

5.1.1. Contain a circular platters that use magnetic particles to store data and information.

5.1.1.1. Storage determined by the number of platters, composition of magnetic coating, density and whether disk use longitudinal or perpendicular

5.1.1.1.1. Characteristic

5.2. SSD ( Solid State Drive )

5.2.1. Contain own processor to manage its sorage

5.2.1.1. Advantages

5.2.1.1.1. Faster access time

5.2.1.1.2. More Durable

5.2.1.1.3. Light

5.2.1.1.4. Less Power Consumption

5.2.1.1.5. Longer Life

5.2.1.1.6. Less heat generation

5.3. Memory Card

5.3.1. Removable flash memory that insert and remove from a slot in adevice.

5.3.1.1. Examples

5.3.1.1.1. mini SD

5.3.1.1.2. micro SDHC

5.3.1.1.3. CF

5.3.1.1.4. xd Picture Card

5.4. Optical Disc

5.4.1. Consist of flat round that written and read by laser. Store item in a single track (divided into sector) that spirals from center to the edge of the dics.

5.4.1.1. Types

5.4.1.1.1. a) CD - ROM ( can read but not write)

5.4.1.1.2. b)CD-R (can write once , but not erase )

5.4.1.1.3. c)CD - RW (erasable , multisession disc)

5.4.1.1.4. d)DVD- ROM(can read but not write/erase)

5.4.1.1.5. e)DVD-R or DVD + R (can write once but not erase)

5.4.1.1.6. f)DVD-RW,DVD + RW and DVD + RAM (can write on multiple times)

5.5. Magnetic Stripe Card

5.5.1. Has magnetic stripe that contain information.

5.6. Smart Card

5.6.1. Stores data on circuit embeded in card

5.7. RDIF tag

5.7.1. Consist of antenna and memory chip that contain information to be transmitted via radio waves.

5.8. NFC chip

5.8.1. Contains NFC chip and antenna that contain information to be transmitted and self - adhesive