Digital Storage

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Digital Storage by Mind Map: Digital Storage

1. Varienty of storage

1.1. RAM




2. Hard Disk (HDD)

2.1. A hard disk, also called a hard disk drive (HDD) contains one or more inflexible, circular platters that use magnetic particles to store data, instructions, and information

2.1.1. Characteristics of a hard disk include: -Tracks -Sectors -Platters -Form factor -Read/write head -Revolutions per minute The storage capacity of hard disks varies and is determined by: -The number of platters the hard disk contains -The composition of the magnetic coating on the platters -Whether the disk uses longitudinal or -perpendicular recording -Density

2.2. solid state drive (STD)

2.2.1. An SSD (solid state drive) is a flash memory storage device that contains its own processor to manage its storage SSD VS HDD Faster access times Faster transfer rates More durable Quieter operation

2.3. external hard drive

2.3.1. An external hard drive is a separate freestanding storage device that connects with a cable to a USB port or other port on a computer or mobile device

2.4. RAID (redundant array of independent disks)

2.4.1. is a group of two or more integrated hard drives

3. Portable Flash Memory Storage

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

3.1.1. -SDHC -SDXC -miniSD -microSDHC

4. Cloud Storage

4.1. Cloud storage is an Internet service that provides storage to computer or mobile device users

5. Optical Discs

5.1. An optical disc consists of a flat, round, portable disc made of metal, plastic, and lacquer that is written and read by a laser

5.1.1. Optical discs commonly store items in a single track that spirals from the center of the disc to the edge of the disc Track is divided into evenly sized sectors A CD-ROM can be read from but not written to Single-session disc A CD-R is an optical disc on which users can write once, but not erase A CD-RW is an erasable multisession disc A DVD-ROM is a high-capacity optical disc on which users can read but not write on or erase A DVD-R or DVD+R are competing DVD-recordable WORM formats, on which users can write once but not erase DVD-RW, DVD+RW, and DVD+RAM are competing DVD-rewritable formats that users can write on multiple times

6. Enterprise Storage

6.1. Enterprise hardware allows large organizations to manage and store data and information using devices intended for heavy use, maximum efficiency, and maximum availability

6.1.1. Network attached storage (NAS) a server that is placed on a network with the sole purpose of providing storage to users, computers, and devices attached to the network

6.1.2. storage area network (SAN) a high-speed network with the sole purpose of providing storage to other attached servers

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

7. Other Types of Storage

7.1. magnetic stripe card

7.2. smart card

7.3. RFID tag

7.4. NFC tags