Different types of Storage devices, about them an
d their storage capacity
Answers
Punch card
Floppy diskette
Tape drive
Zip disk
CD
DVD
Blu-ray disc
Flash jump drive
Hard Drive
Solid State Drive
NAS
Cloud Storag
Punch card:A punch card is a simple piece of paper stock that can hold data in the form of small punched holes, which are strategically positioned to be read by computers or machines. It is an early computer programming relic that was used before the many data storage advances relied upon today.
A punch card is also known as a punched card, IBM card or Hollerith card.
A punched card is a card made of special cardboard designed for punched cards. The size of the card is 82 * 186 millimetres which same measures that were used previously in the US dollar. The card has 12 lines and 80 columns. The card can be perforated with rectangled holes by special devices.
Floppy disk:A floppy disk, like a cassette tape, is made from a thin piece of plastic coated with a magnetic material on both sides. However, it is shaped like a disk rather than a long thin ribbon.
A floppy or floppy disk, a floppy diskette is a type of storage media, capable of storing electronic data, like a computer file. The floppy diskette was first created in 1967 by IBM as an alternative to buying hard drives, which were extremely expensive at the time.
The picture shown on this page is an example of a 3.5″ floppy diskette, which was one of the most commonly used floppy diskettes, capable of storing 1.44 MB of data.
Tape drive:A Tape drive is similar to floppy disk a tape is also a magnetically thin coated piece of plastic wrapped around wheels capable of storing data. Tape is much less expensive than other storage mediums, but it is a much slower solution because it is sequential access and is typically only used for backing up large amounts of data.
Zip drive:The Zip drive is a removable floppy disk storage system that was introduced by Iomega in late 1994. Considered medium-to-high-capacity at the time of its release, Zip disks were originally launched with capacities of 100MB, then 250MB, and then 750MB.
CD:Compact discs hold 700MB of data (equivalent to 80 minutes of audio, hundreds of high-quality digital images, and small video files). Unlike DVDs, CDs are not yet available in double-sided or dual-layer formats.
DVD:Digital Versatile Disc or Digital Video Disc it is digital optical disc storage format used to store high capacity data like high quality videos and movies. an optical disc storage format invented and developed by Philips and Sony in 1995. optical disc is in Single-layer, single-sided Single-layer, double-sided,Dual-layer; single-sided,Dual-layer, double-sided
Blu-ray disc: Blu-ray Disc contain 25 GB per layer, Blu-ray is similar to normal DVD or CD in Size dimension but in space memory is larger then DVD and costly, to read and write special Blu-ray reader required.
Flash drive:A USB flash drive is a device used for data storage that includes a flash memory and an integrated Universal Serial Bus (USB) interface. Most USB flash drives are removable and re-writable. Physically, they are small, durable and reliable. A USB flash drive may also be known as a flash drive or USB drive
Memory card :A Smaller size a memory card is a device used for data storage. SD memory cards in things like digital cameras, phones, tablets, and most computers. its Physically small, durable and reliable. Convert also into USB flash drive USB memory card drive.
SPECIAL MEMORY CARD APPLICATIONS
MEMORY CARD/DEVICE SD SDHC SDXC MICROSD COMPACT FLASH
Mobile Phones ✔
Digital Cameras ✔ ✔ ✔ ✔
Laptop/Computers ✔ ✔ ✔
Tablets ✔
DSLR Cameras ✔ ✔ ✔
SD MEMORY CARD SPEED CLASSES
CLASS MINIMUM SPEED
2 2 MB/s
4 4 MB/s
6 6 MB/s
8 8 MB/s
10 10 MB/s
Ultra 1 10Mb/s
Ultra 3 30MB/s
Hard disk: Hard Disk is mainly largest data storage device which is used for External Memory and a permanent Storage,in computer HD need for operating system, software titles, and most other files are stored in the hard disk drive.Hard drive keeps a hold of its data even when powered off. That’s why you can restart a computer, which powers down the HDD, but still have access to all the data when it’s back on.
There is motors inside which is spin the disk platters each platters having sectors located on tracks, which are stored on rotating platters. These platters have magnetic heads that move with an actuator arm to read and write data to the drive.
Hard Drive Manufacturing Company
WD (Western Digital Company) ,HGST (formerly Hitachi Global Storage Technologies), Seagate, Toshiba, Sony, Transcend, Dell
When selecting the HDDs for surveillance video storage or desktop PC, we will choose the products from Seagate or Western Digital. In order to simplify the selection, Western Digital’s hard disc drives are categorised by the product’s features, also using different colours to mark.