The backup of the information or also called backupIt is a procedure used in computing; However, in this post we will talk about the information backup classification what is there and what devices are used.
Information backup classification, what is it?
The support of the information or also called backup, consists of the copying of a quantity or a totality of files of an electronic device (telephone, tablet or computer); These files are used as a backup, in case a file system needs to be fully or partially restored.
You can find more detailed information about the backup entering the following link, which we will leave you below; We recommend reading it, as it will serve as a complement and preamble to this article: Backup meaning.
An extremely important file comes into play when making a backup; This backup can be made to certain specific files or to a complete operating system. The file in question is the «File bit«, Being a kind of endorsement brand; which in turn, can encompass a single file or several of them, composed in blocks.
Each modification that is made to the files (copy, move and others); the bit will be activated and depending on how you interact with this important file, the information backup classification; which are three main and that we will name next.
Information backup classification
If the file bit is modified or deleted, or is maintained; it can belong to one classification or another; In addition, each has its own advantages and disadvantages:
Full backup
Originally called full, Due to its translation into English, as its name indicates, this file will make a total backup of the file system, without ignoring any. Of course, the copy has to be done, with the files that we have selected, but all of those will be backed up.
Regarding the file bit, after the backup, it will be deleted, indicating that the backup has already finished; it is deleted, in each and every one of the files and file blocks, on which the backup was made.
As for the pros and cons, we can mention this type of support; The first as an advantage is that only, through this complete backup, we can recover all our data (only the information that we have decided to save). As for the disadvantage, it is that as each and every one of the files is being copied, the delay time will depend on the weight of all the information.
Increment
This is the second information backup classification; related to the first, in the sense that this backup will be carried out, after the first type of backup. Its original name is Incremental
The files that will be backed up will be those that have had some kind of modification, after the complete Backup; so they will have the file bit present with them. In other words, only those who have the bit, will be supported; after the backup process, like the first case, the file bit, it will be eliminated of this supported information.
Its advantage, obviously, will be speed, since by copying fewer files, it will take much less time than the first type of backup; Its disadvantage is that if we want to recover an entire file system, we will need both the files from the last full, like all of the Incremental that have been performed.
Differential
Whose original name is DifferentialThis information backup classificationIt is very similar to the previous one, and the way to carry it out will also be; the difference then lies in the file bit, which on this occasion, will not be eliminated or modified, it will remain intact.
The advantage, with respect to Incremental, is that if we want to recover a file system, we will not need all the incremental backups or something like that; it will be enough if we have at our disposal the last Full done, and the last Differential accomplished. The disadvantage is that this type of backup will occupy a greater amount of space on our backup disks or some type of storage device.
As you can see, depending on what you are looking for and what your needs are, a type of backup will serve you for one thing or the other; It is up to your discretion and disposition which one you think is convenient to use.
Types of storage devices
Already seen the information backup classification, it is obvious that it is very important to know the different types of storage that are used to be able to carry out the backup; otherwise, it could not be done.
The most common and the most famous are hard drives, which are devices with a large capacity of available space; We have them in two presentations, the portable ones and the normal ones.
USBs, also known as pendrives, which are removable flash drives that we can take anywhere; in addition to USB, such as drives flash we have the SD memories. Finally, the DVD discs or nowadays already, the Bluray ones; In the following video below, you will be able to learn more about it on this topic.