Digital information storage . It appears as a necessity from the emergence and development of new Information and Communication Technologies . Digital storage media includes hard drives, optical media such as compact discs ( CDs ) and versatile digital discs ( DVDs ), and memory cards.
Summary
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- 1 History and Evolution
- 2 RAM memory
- 3 Cache memory
- 4 Hard disk
- 5 Floppy
- 6 CD-ROM
- 7 DVD
- 8 USB stick
- 9 Other types of digital information storage
- 1 Cloud Storage
- 2 What is actually the cloud?
- 3 Examples of cloud storage
- 4 What are the advantages of cloud storage?
- 5 Features
- 5.1 Disadvantages
- 10 References
History and Evolution
A computational storage device is a device that is capable of storing data or any type of information. Historically, paper has been used as the most common method, but today it is possible to store digitally on a compact disc, for example, data that would fit in thousands of archived folders. Throughout history, the path to knowledge has been sought and its consequences of finding the smallest system physically and with the best capacity to store more data and process it quickly. The beginnings of data storage units began with punched cards, units that were certainly few comfortable, since the order of the cards had to be remembered, (since if it was lost there was no way to recover the program) these cards were inserted in a processing machine in a sequential way, where it was housed in memory and ready to be tested. The way of reading was similar to the Braile reading system, the computer read through holes in the cards. It is worth noting that sometimes u depending on the complexity of the program could occupy about 200 cards that had to be placed one by one inside the machine, and when turning off the machine all that data was lost. Years later due to the need to keep an order on these cards and not having to waste so much time inserting one by one, the punched card ribbon, better known as punched ribbon, is created, and thus made much easier the portability of this system. It wasn’t long before the new technologies for magnetic tapes were discovered and started to be applied to computer data storage since the masses basically consisted of spaces of tape covered with ferrous oxide, where it was placed positive and negative, depending on the In this case, the principle was to have a series of magnets intertwined in a tape that asked them to change the polarity and this made it work under the same principle of perforations but without the need for holes, only working it by magnetic waves. achieved with the ferrous component that was placed on the tape; To make sure of this data, different forms were created that eventually became obsolete, since the size of the tapes before was too large. But,
RAM
The Random Access Memory or RAM (English acronym for Random Access Memory), is a semiconductor memory, in which you can both read and write information. It is a volatile memory, that is, it loses its content when disconnected from electricity. RAM is the most important storage component of a current computer, along with the hard drive. RAM is one of the computer components that has evolved the most in the last twenty years. If in the late 80s the capacity of RAM memory was around 4 MB, now it is normal to buy a computer with at least 1024 MB, (1 GB). Normally, progress has been made in an amount of MB equal to powers of 2. In the mid-90s, with the arrival of Windows 95, computers began to use 16 MB of RAM memory, later 32, 64, 128. .. Up to Pentium 4 and using Windows XP, where at least 256 MB of RAM is recommended, although nowadays it is normal that they use between 1 Gigabyte and 8 Gigabytes. Although some PCs already use 32Gigabytes of RAM JEFRI
Cache
In computing, the CPU cache is a cache1 (/ ˈkæʃ / or / kaʃ /) used by the central processing unit of a computer to reduce memory access time. The cache is a smaller and faster memory, which stores copies of data located in the main memory that are used more frequently. When the processor needs to read or write to a location in main memory, it first checks to see if a copy of the data is in the cache. If so, the processor immediately reads or writes to the cache, which is much faster than reading or writing to main memory.
HDD
It is the storage medium par excellence. Since the first hard disk came out in 1955 until today, the hard disk or HDD has had a great development. Hard drives are used in desktop computers, laptops, and more complex storage drives. The hard disk is the component that is in charge of storing all the data that we want. While RAM acts as “backup” memory (as a variable that stores and loses information as data is processed), the hard disk permanently stores the information that we put in it, until it is erased. On the hard disk we store anything, such as documents, images, sounds, programs, videos, files, etc. Hard drives have evolved a lot in the last twenty years, especially expanding their capacity
Floppy disk
Also called floppy disk. At first glance it is a square piece of plastic, inside which is a flexible and magnetic disc, quite fragile. Floppy disks are inserted into the computer through the floppy disk drive. In the 80s they enjoyed great popularity. Computer programs and PC video games were distributed in this format. Since at that time the programs and games did not even reach 1 MB, they fit perfectly on floppy disks. In its day there was a rectangular floppy disk, and later the 3 1/2 inch floppy disk appeared, the popular square floppy disk. In the 1990s, programs began to take up more memory, so in some cases multiple floppies were needed to complete an installation. Floppy disk is a magnetic storage system, like cassettes or hard drives, and although they have enjoyed great popularity since the 80s until now, but they are already obsolete. In fact, all computers are shipped from the factory without a floppy drive, as floppy disks have become too small in terms of capacity and speed. Considering what current programs occupy, a floppy disk nowadays only serves to store some documents oftext , images and presentations.
CD ROM
It is a compact disc (English: Compact Disc – Read Only Memory). It is an optical compact disk (not flexible like floppy disks) used to store non-volatile information, that is, the information entered on a CD cannot be erased in principle. Once a CD is written, it cannot be modified, only read (hence its name, Read Only Memory). A CD-ROM is a flat plastic disc with digital information encoded in a spiral from the center to the edge. They were launched in the mid-1980s by prestigious companies like Sony and Philips. Microsoft and Apple were two of the big computer companies that used it in the beginning. It is one of the most widely used storage devices. In fact, it was the substitute for cassettes to store music, and floppy disks to store other types of data.
DVD
The DVD drive is similar in physical size to the CD, but its storage capacity is much greater (A DVD allows the storage of between 4.7 GB and 17 GB of data). It is used to store movies in compressed digital video format, with subtitles in several languages, and with some possibilities for interactivity.
Pen drive
USB memory was invented in 1998 by IBM, but was not patented by him. Its objective was to replace floppy disks with much more capacity and data transmission speed. Although currently on a CD or DVD you can store memory to later erase and manipulate it, the most comfortable and used are the USB sticks. They are small devices the size of a lighter that act almost the same as a floppy disk, but with a much larger capacity, currently ranging from 64 Mb to several gigabytes.
Other types of digital information storage
Cloud storage
Storage of information on the Internet.
Not everyone understands the concept of Cloud Storage, most of the pages we find on the subject make too formal definitions or assume their knowledge. In this article we will try to explain it in a simple way, you do not have to be a computer scientist to understand it or a technology expert. Let’s start with the basics: Cloud Storage consists of storing files somewhere on the Internet. Those places on the Internet are applications or services that store or save those files. Files go from being on our devices to being stored in that service or application. For example, if you upload a photo to Facebook, you are already storing something in the Cloud. That file will be transmitted from your computer or mobile to the Facebook servers, then the photo will be saved by them so you can share it and your contacts see it. Of course Facebook is not a Cloud Storage service, but it helps us understand what it is about. To save the photo, once we have uploaded it, the Facebook ones do not do magic or have any cloud of water vapor or anything like that, they have a hard drive, a place where they copy the photo file. Of course, we are talking about a very fat hard drive, with much more capacity than the hard drive of your computer and the memory of your phone. When we have talked about a server, we are referring to the computer that is connected to that large hard drive. Internet servers are responsible for storing the information uploaded to the internet on that super-disk connected to that server.
What is actually the cloud?
First, the cloud is far from being smoke or like water vapor. The Cloud are actually computers (servers) connected to the Internet with huge disks that can store files. When you upload a file to some Internet site, we say that you have stored it in the Cloud. The words Cloud or Cloud are more marketing terms than anything else, they serve to describe those Internet services that do more than show web pages, for example save files or an accounting program. They are programs or services that are not on your computer, they are on the Internet, that is why they are said to be in the Cloud.
Examples of cloud storage
Google Drive is a file hosting service that was introduced by Google on April 24, 2012. It is the replacement for Google Docs that has changed its URL, among other qualities. Each user has 15 gigabytes of free space to store their files, expandable through different payment plans. Your documents are stored on a Google server so that they are available from any device. You can share any of your files, whatever their extension and in a very simple way. And also create folders, documents, presentations, spreadsheets …
Cloud is an Apple platform and a cloud storage system. Offers service for Mac and iOS clients. It is a platform for editing and sharing documents and allows users to store data and then access them from any computer. ICloud saves your favorite sites so that they can be accessed from anywhere with your iPhone, iPad, iPod touch , Mac or Pc and you can even back up your computers. Cloud was launched on October 12, 2011 and, since July 2012, has more than 150 million users.
Onedrive is a cloud storage service from Microsoft. With this service you can store photos, videos, and all kinds of files and documents. It offers different options to share the stored content. It is compatible with Microsoft Windows, Mac and iOs, Android or Windows Phone platforms.
Dataprius is a cloud storage service that mimics a Windows desktop. You can store any type of file. It is not a virtual disk of files like the previous ones, but it is a virtual Server where there is no synchronization. The files are accessed directly from the server. Access permissions can be established between users and it complies with the Organic Law on the Protection of Personal Data of Spain (LODP). It also signs a confidentiality and service provision contract with its paying clients. It works in Windows and Android environments.
What are the advantages of cloud storage?
Cloud storage services make it easy to store and share large files on the Internet. But, many entrepreneurs are still unsure about the efficiency and security of those systems. All companies can benefit, regardless of size or segment.
characteristics
- Improve technological resources.
- Costs are reduced.
- Access to documents almost in real time, without the need for long-lasting uploads.
- Allows you to share resources regardless of device and location.
- Its use is automatically optimized.
- Security is equal to or better than other conventional systems.
- It does not require installation or maintenance since each user accesses from different places.
Disadvantages
- Internet access is required.
- There is a certain dependence on the providers of this type of service trusting in its technology and operation.
- Application interfaces are continually being modified.
- Possible server overhead if the number of users is too high or a proper usage policy is not followed.
