Incremental backup. Types of backup Differential backup

There are many different systems for creating disk images and backing up data, such as Acronis True Image, Pagaron Drive Backup, Ghost, Time Machine for Mac computers, etc. Microsoft has also introduced a data backup system into its operating system, which is available to both primary users and system administrators. Before the release of the operating system Windows Vista Microsoft has sold its NTBackup backup system and the System Restore utility to customers, to name a few shortcomings. With the release of Windows Vista and the transition to the VHD image saving format, it became possible to simply back up data and create images of the operating system using a new set of utilities under I'll call it Windows Backup and Restore. After the release of new operating systems This component has been refined and modified. In this article, we look at what Microsoft is promoting to the end user for data backup in the Windows 8 operating system, which was recently released. Let’s briefly talk about the main types of backup, which are implemented in numerous products of various companies.

Types of backup

The backup copy is divided into different types in the order that is placed before the software that implements it. In some cases, koristuvachs need to make copies important files, which are saved on disk, in others - to create complete images of the operating system with the ability to roll back all previous changes. In this case, system administrators are offered the possibility of centralized saving backup copies data, which will make it easier to control versions of backup copies and update systems as needed. Naturally, the chosen type of backup requires a different algorithm for updating and saving files - either byte-by-byte or sector-by-sector copying from data files, if the information is accurately recorded on the device with the backup. To update files and data, file system functions can also be used to support logging and logging of changes - a new version of the file system is initially restored, and data is saved in a backup copy when necessary And if the files next to them are marked as changed. File systems with advanced version control support are best suited for this situation, since it is important to save space on the backup media. Avoid traditional backups of files that are not used in Danish moment, to develop algorithms for reserving the real hour In this case backup copy This will only happen if the file is open in any program. This possibility is available in all cases of snapshots of file systems and is actively blocked, for example, in virtualization systems for working with virtual ones. disk hoarders. The process of reserving data can be carried out in a number of ways. Let's take a look at the broadest ones.

Cloning of divisions and creation of images

Cloning involves copying a partition or partitions of the disk with all files and directories, as well as file systems on the backup media, so that new copies of the data are created on another media. This allows for a large amount of space on the backup drive, and at the same time allows for maximum backup of the adjacent PC or disk with data. You should also know about cloning the system using a special image - a virtual storage device, which surrounds a file that can be stored in a number of disk partitions. This image can be created by the operating system itself. It allows for the shortness of these obligations, and also allows for the ability to deal with it yearly, as with primary disk, or connect it to virtual machines This will make it easier to transfer operating systems from one server or computer to another. Today's virtual images are gaining popularity for their flexible connection, cross-platform nature and easy transfer from one computer to another. As a rule, cloning or creating an image of a backup copy will rarely take place, but only a few days before, taking a backup copy is even great. Similar procedures are used in most cases to create a copy of the operating system with all the files, and not to back up additional data on disk. To back up data that changes frequently or is carried out at work, another type of backup is used everywhere - external file backup.

External file backup

This type of backup transfers complete duplicates of all files on the device in a simple way - copies from one place to another. External file backup through a trivial process must be carried out during non-working hours, which is explained in advance by the great obligations of these data. This type of reservation allows you to save important information, but through the large terms of the reservation of wines it is no longer suitable for updating the current data. It is recommended to carry out external file backup at least once a week, and even better to compare it with other types of file backup: differential and incremental.

Differential reservation

Differential backup transfers a copy of only those files that were changed from the remaining permanent backup. This allows you to change the data on the backup carrier and speed up the data update process if necessary. However, differential backups need to be carried out more frequently than external backups, which are even more effective as long as they allow you to update data that has been changed recently, and history of file changes from a new copy.

Incremental backup

Incremental reservations are increasingly differentiated from differential ones. Please note that at the first start, only those files that have been changed since then are backed up, or else a differential backup is created. The next incremental backup process only adds those files that have changed since the previous backup procedure. In this case, new or new files do not replace the old ones, but are added to the device independently. Of course, in this case, the history of file changes increases with the individual backup stage, and updating data for this type of backup takes longer, so it is necessary to update the entire history in files, piece by piece. However, with differential backup, the update process is much simpler: the main copy is updated and the remaining data of the differential backup is added to it.

There are plenty of backup software packages available for different types of backups, and most often use them for greater efficiency and space savings. System Windows utilities, as is evident in this statistic, there are also different types of reservations, which allows for a more dynamic and efficient update of customer data in accordance with the situation. For server operations Windows systems There are more utilities available for updating, not for desktop Windows operating systems, but we will also look at those that are available to basic users. Moreover, for various OS editions Windows dial Components vary between operating systems for corporate and home use. For Windows operating systems, there are two main data backup utilities, depending on the type of backup.

Windows Backup And Restore

Windows component Backup And Restore became available to customers starting with the release of the Windows Vista operating system and represents the creation of a permanent backup of the operating system with the possibility of incremental backup. With the release of the Windows 8 operating system, this component was renamed Windows 7 File Recovery. Wanting to gain nothing from its functionality and without wasting any money, Microsoft recommends using the new File History utility for data backup, which is included before the Windows 8 and Server 2012 operating systems, and we will learn about it a little later. Windows Backup And Restore allows you to create an automatic backup on a new device, optical disks or a special place on a remote server.

Remaining capacity is only available to singers Windows edition 7/8, since it is positioned as a solution for IT administrators of companies. A full system backup of each component is transferred to save files for computer users, and it is possible to create an image of the entire operating system and back up other disks of the computer. For the developer, it is also necessary to create an image of the system, which can be used not only on a new computer, but also as a source. virtual disk in virtualization systems. For each installed component, you can specify folders that need to be backed up, as well as specify system drives that need to be saved during backup. When backing up more files koristuvacha Windows Backup And Restore uses incremental data backup, which allows you to recover more sticky files at different times. Make sure to download and transfer the backup files from your computer and create a system image, and copy the data to the update point of the Windows System Recovery component. The process of updating client files can be started directly from the operating system - it is simple and reasonable for most clients. Updating the system in the event of a serious failure can be done using the supplied utilities. Windows Recovery. For this you need to either create a new special update disk or restore the installation image of the operating system that was previously installed on the PC. At the hour of attraction in the mode Windows update Recovery assigns your choice to your choice offensive regimes update: update files, go to the last point of update, remove backup image systems on the main system disk. The data for updating in this case can be taken from an optical source, external or internal storage, as well as a temporary collection of data. The edition of the operating system does not play any role. Unfortunately, despite the fact that Windows Backup And Restore is a difficult and important component of the operating system, Microsoft announced that, based on research, this utility is used by just 5% of its users. In connection with this, for more simple and effective data backup, Microsoft has developed a new generation of system backup for clients - Windows File History.

Windows File History

Windows File History, a new component of the Windows 8 and Server 2012 operating systems, is rapidly replacing its predecessor - Windows Backup And Restore. When clicking, replace incremental file backup, while system image creation and continuous backup mode can be disabled please help Windows 7 File Recovery. The Windows File History component was initially developed as a handy and practical solution for business owners who needed an insightful way to back up their important data. During the development of this utility, particular respect was given to the simplicity of the initialization of the process with the help of all possible experts. I'll take a look again all savings data. The process of reserving for an additional new utility is carried out automatically and does not require any additional actions. It is impossible not to change the reservation to edge structures, which allows you to easily and manually process saved files, as well as vikorista mobile connections where weak channels drain the connection.

The Windows File History utility was based on part of the basic functionality of Windows Backup And Restore, which was transformed into a visual warehouse, which is suitable for representing the storage data of the customer. A review of previously saved data is now available from file manager Windows Explorer For more information, see the History tab. This allows you to quickly find the necessary files and update them wherever you are on the system. Regardless of the fact that the backup process is based on an incremental backup, when working with it, there is no thought that the backup itself, with its history of creation, modification or deletion of client files, is available at any time. Such an approach to backing up data will, of course, lead to a lot of misunderstandings among buyers, since the process is manual and starts with a standstill, without a robot with Windows Backup And Restore.

To back up data using Windows File History, you can use optical media, external storage, or data storage. Of course, storing data on optical media is more traditional than a real method of maintaining incremental backup, and data can change even frequently. Optimal choice For emergency customers, there is external or internal storage backup.

For ease of operation in Windows 8, any external storage device that is connected can be used as a backup for the additional Windows File History. So, since you have accumulated connections, in the menu options that appear during autostart, there is now okrema tab, which allows you to recognize disk connections as backup storage in one click. In this case, if the disk has been connected to the system for a long time, data backup will be renewed as soon as it is installed back. A similar approach is used when backing up data at the junction. Connections local measures not at all due to the operation of the system, but when hemstone edge The operating system automatically initiates a new backup cycle at any time. Prozora activation system Windows function File History is a truly great plus for a correspondent.

For backup procedures using the additional Windows File History utility, users can choose the time interval between each data backup if necessary. It is possible to set intervals between reservations of 10 days and up to 1 day. For Windows File History, you can set up only one backup location at a time, however, if you add multiple storage devices to the backup location, they can be stored alternately depending on their availability. It is very important to have a hemorrhage and a nearby hoarder. In this way, the data will be stored in the same place, carefully in the flow configuration. It is also not possible to assign the function to selecting the number of copies to be saved. For example, after one or several months the system can automatically erase old data and replace it with new ones. This allows you to reserve space at the place where the data is being backed up. In addition, koristuvach can redeem up to 25% of the accrual space for reserving data.

The Windows File History utility automatically backs up the folders that are most actively searched, and itself - “Contacts”, “Vibrana” and “Desktop”. In addition, the backup is automatically backed up to all “Library” folders. The user can create official libraries of data, which are symbolic messages to real folders on the computer. If you need to back up a specific folder on your PC, you need to Installing Windows File History You need to add this folder to your libraries. In addition, if certain folders need to be turned off from backup, the user can selectively turn off all the user’s libraries or a set of folders that are frequently accessed. Secure active integration with the “gloomy” saving function Windows data Skydrive of this "gloomy" service can be aimed at reserving the important data of the client that is saved in the "gloomy" service. In order for this connection to work, you must first install Skydrive, after which it will automatically access the library and be backed up if necessary. Unfortunately, the function of backing up data on a cloud is not yet available to users, but Microsoft is already planning to add the ability to back up data on a cloud to future versions of its OS.

In this manner, a new system Windows backup File History is wonderfully suitable for most backers. A simple and intelligent interface with the ability to quickly add and update files is much closer to the daily use of the account, below previous version Incremental backup with Windows Backup And Restore.

Over the years, various backup technologies have been developed in an attempt to minimize the amount of disk space required to save backup copies of files, and to change the amount of traffic that must pass through. Managing files on remote resources (computers, storage drives, etc.) . It can be easy to get confused by the variety of backup methods provided by programs, as the terminology is often not clear at first glance and does not describe the specifics of the methods. In addition, sometimes, at first glance, it is important to understand the advantages and disadvantages of any technology. This article is cerebral, which allows you to understand the various terms that you need to understand, as well as their strengths, advantages and shortcomings.

Note: Whose assistant has the most basic vicoristic methods for today. An understanding of their areas of stagnation, boundaries, features, advantages and shortcomings will be more than sufficient to simplify the choice of a solution for organizing a backup copy on a computer.

Advanced backup methods

Other backup methods and techniques

1. Complete backup copy

It's the same as it sounds. A complete copy of all data that the user selects when setting up a backup. Make sure that the copied files are placed in one archive file and compressed to reduce the size of the backup backup. Right now, when a new backup is created, all files are copied from the device to the archives. There is one important problem with this approach. Regardless of whether you have changed or added a bunch of files, starting a backup will result in repeated copying of files, so that in the end pouch you will see not only the final operation, but also disk space, as well as each copy of a large number of duplicate files , which are divided from copy to copy. You, of course, can remove old copies for saving purposes, otherwise everything will be spent richly. In addition, if we are talking about saving backups on remote resources, then, at the same time, a new copy will appear on the traffic that is flowing.

A better idea would be to make a new copy of the data once, and then add or change files on a regular basis. There are a number of methods to implement this idea, which are described below.

Advantages and disadvantages of creating new backup copies

• All files are updated quickly- If you need to make a new copy of files, then it’s easiest to work with one archive file
• New backups take up a lot of space and time- The new copies are no longer suitable for regular backups, for example, today or every day.

After creating an archive with a new backup copy, a differential backup helps to change the size of the existing copies, resizing them based on the differential alignment of the output files with the files from the remaining backup copies. All added or changed files are copied to the archives with a new copy. It is important to understand that differential backups are cumulative. A skin-based differential backup stores in backup everything that has been deleted since the last backup, including files that were already included before the previous differential backup. Not less, however, differential backups are created more quickly and take up less space, even if permanent backups are not required. Therefore, this method is well suited for light or frequent regular backup tasks.

The pros and cons of differential backup

• The update is equal to other methods- To permanently update all files from a backup copy, you will need only two archives: the archive with a new copy and the remaining differential backup.
• Differential backups occupy more space than analogues- The approach that allows you to more efficiently recover disk space and create backup copies before you create a new backup copy, but still this method is still too much tribute
• The skin's differential backup is growing significantly- If the fragmented files are merged only with the full backup copy, then the differential backup will be merged with the new copy very soon. In this case, you need to make a new copy of the files and start the process all over again (presumably finish in automatic mode).

The incremental backup method is very similar to differential backup, but has one important advantage - it saves less redundant data in backups. Every incremental backup will replace those files that have been created or changed since the moment of creating a new copy or the remaining incremental backup. Such backups save a lot less redundant data compared to differential backups, but the effect of incremental backup is still present, so incremental copies can replace files that are already either in one of the incremental copies, or later changed. Incremental backups are especially good for creating frequent backups, for example, every day.

The pros and cons of incremental backups

• Incremental backups are created more or less differentially- Due to the fact that changes are made beforehand, such backups save less external information and are therefore created more quickly.
• Incremental backups are smaller than differential ones- Due to the fact that these are the most advanced changes, such backups save less information
• You can create more incremental backups, less differential ones- Since backups save less external information, there can be more of it between new copies, and less than with differential copies.
• Updates of incremental copies take longer, less than differential ones- In order to update files, you need to extract them from new copies, and then successively freeze all current incremental backups.
• Increasing risk of wasting information- If one of the incremental copies is corrupted or deleted, updating files from that copy will be impossible, resulting in permanently wasting changes to files and uploading files. It is still possible to update data from other incremental copies.

The term "delta" is often related to the differential backup method, and is also called "delta backup", "delta block backup" and "delta style backup". And basically, all these concepts are related to the same backup copy technology. The delta method is more correctly called delta block backup, as it is related to the incremental and differential approaches. It is important that the delta block backup method freezes when files are changed or not created. Added files are also saved in copies, or in primary mode.

The previously described backup methods create a new copy of a changed file, where only one character has changed. Of course, such an approach does not pose any special problems, as we are talking about small text documents However, if you are dealing with large files, such as databases, such an approach will be even more problematic. For example, mail clients, such as Outlook, most often save all information in one great file(Lists, contacts, etc.). It turns out that by removing one sheet, all previous methods will be difficult to create a copy of the entire file. And if such files can be changed frequently, no matter which way you save them, your backups will grow uncontrollably and lead to saving a large amount of redundant information.

Delta block backups solve these problems by backing up just the portions of the files that have changed, rather than the entire file. The essence of the finishing method is simple. The same file is split into blocks of the same size, and then the backup copy blocks the changed file to match the blocks of the file in the new backup copy. And as a result, only those blocks that were changed or added to the file are lost in the backup copy. The term delta may confuse you, since the methods used to create backups may vary. In the case of the differential method, the archive will contain a duplicate copy, and in the case of the incremental method, the archive will contain a difference between the remaining archive and the changed file. Apparently, the advantages and shortcomings will be the same as those of the methods in connection with which the delta stagnates. However, with any incremental backup, the risk of losing information will be greater, since the loss of an incremental backup means that it is impossible to save changes from all current incremental backups (because it cannot be guaranteed that there will be and the changes will be saved correctly).

Note: The size of the block depends on the program or the selected size that the program supports. Set the block size to be in the range of 1 to 32 kilobytes.

Delta is especially good at using technology, where files are backed up immediately after creation or change. This approach is also suitable for real-time backup or uninterrupted data protection. It’s very easy to use delta if backup copies are saved on distant resources (servers, storage) in areas of shared capacity.

Advantages and shortcomings of the delta block backup

• Delta backups take up even less space and are created more quickly
• Delta backups allow you to save much less external information- Incremental and differential backup methods, through the need to copy files, with minimal changes, can save a significant amount of redundant information. The delta block copying method allows you to change this amount.
• Fragments of delta blocks are created by programs using specific algorithms, then you can only renew them with these very programs. Who senses such backups between these clients, which may require manual updating of the data.
• Delta block has more redundancy, so it is necessary to update files from different elements.

The technology of binary patches has been expanded as a way for retailers software security It’s easy to update your programs to clients via the Internet. Such “patches” replaced modified parts of files. Parts of the files themselves, not all files. Such patches take a lot of money smaller size What would simple patches do to completely replace files? Over the past year, this technology has been adapted for backup purposes.

Note: An example of this backup method is FastBittm, which is used by great companies such as Microsoft, IBM and Compaq.

The method of binary patch backups is very similar to delta block backup, with the difference that delta vikory blocks are equal, and binary patches, as the name suggests, are vikorist you, as one equal. In other words, delta copies into the backup archive any block of data that has changed, even if just a couple of characters have changed (for example, a block of 32 KB, then when you change 1 character, the entire block of 32 KB will be copied), and with the binary patches Only the bits that have changed are copied. tributes This flexibility allows you to protect the size and size of the traffic that is transmitted.

Advantages and disadvantages of binary patches of backup copies

Note: At this time there are very few backup backups that would support qiu technology. In addition, there is very little information behind this technology, so there are few advantages that can be seen from the theoretical side.

• The supernatural nature of the data is almost entirely apparent., which is where the smallest backups come from.
• Minimum size allows for a reduction in vantage on the smug there is a passage of boundaries.
• This method is greater vimogliviy before system resources that time lower delta. However, such an approach can be compensated for by significant reductions in interest in the margin.
• There is practically no information about those how the file is updated and how much method effective. Although, theoretically, the method is guilty of being not very complex, lower delta, nevertheless, practice and theory can seriously differ.

6. Mirror backups

Most backup programs support mirror backup as an alternative to full backup, differential backup, and others. Some programs are using alternative terminology to understand mirrors, such as “just a copy.” It is often the case that mirror copies are mainly a simple type of backup. This method does not require a special backup technology, only a simple copy operation. As a rule, if you copy and paste a directory from one disk to another, you can note that you have created a mirror backup copy of this folder. Files in mirror copies are called the files themselves, which are in Dzherel. They are not compressed into archives, as with a full backup (though programs support the compression of certain files and encryption).

When mirrored backups are used

Mirror copies are best suited for use if most of the copied files are already compressed into archives. For example, music files are in mp3 or wma format, images in jpg or png format, video in DivX, mov or flv format. In addition, most installers are also squeezed. If you include these files in the initial procedure of a permanent backup, as a result of compression, you will note that in addition to the fact that the backup will take a long time, the backup archive will have a small size (very few data will be compressed). Whose sense is it best to create a backup for those who are not this number of files. If your backup programs support filters, you can use them to automatically select the appropriate files for each backup.

Advantages and disadvantages of mirror backups

• Mirror copies can be easily used on similar files.
• Through those in which the mirror copy is not saved in a single archive file, you can worry less about file corruption.
• Mirror copies, as a rule, do not suffer from restrictions and require this plenty of space to save, so that other methods do not stagnate, such as, for example, harsh messages (more details about them will be discussed later)

7. Synthetic backup copies

Synthetic external backup is often described in descriptions, but it is clear that it is not a backup method, but a technology for organizing a backup that can be consolidated into one form meaning of methods to more effectively update and create backup copies.

Synthetic copies, as a rule, are stored only in client-server backup systems. It’s easy to finish the sense method. The client computer can create a backup copy in any way (incremental, differential, etc.) and transfer the backup copy to the server. The server then independently merges a number of adjacent archives to form a synthetic new copy. This method of organization allows, after creating the first new backup copy, client computer Do not create new backup copies again, otherwise the process will be automatically saved on the server.

The advantage of this approach lies in two important points. First of all, the backup capacity for vicarious differential copies will not decrease over time due to the aggregate of changes, fragments of synthetic backup archives will be created on the server on a regular basis. Otherwise, outside of updating the files on the client machine, the partial file reconstruction process is not affected. The reason for this is that the reconstruction is already carried out on the server, allowing the client machine to update the archives in the least possible hour.

8. Backup copying with vikorstannyam zhorstkih posilany

Some backup programs encourage you to make tough decisions to save disk space by creating multiple mirror backups of the same set of files.

To understand how hard it is to save money, you need to understand how files are saved on your hard drive. When a file is saved, the data can be physically recorded in any location on the disk. In this case, the file system makes it harder to physically remove data from the file you have been victorizing. File systems allow you to create more than one hard message of real data. The vikorystany of harsh messages allows you to vikorist a number of files in different directories that will be applied to the same physical data.

If you use backup programs that require strict instructions for making multiple copies however new files, the program will create a hard copy for all files that have not changed. For example, if you make two copies of a directory that holds 100 MB of data, then in most cases these copies would take up 200 MB of hard disk space. With the help of hard copying, such copies will take up 100 MB of disk space. Changing any files in such directories is really only changing physical data, in which case the data will be available in both directories. For example, if after creating directories with painstaking efforts, you first increase the file by 2 MB, then its total size will be 102 MB, and in both directories the data in the file will be the same.

Please note that if you want to delete one of the backup copies in order to avoid harsh messages, this will not be a problem, as long as other messages are not lost. Physical data to the file on the disk is only deleted if all the hard data sent to it has been deleted. It is also necessary to understand that hard messages can only be created within one volume (logical drive). For example, hard connections cannot be made between different partitions or disks. On Windows file systems NTFS supports hard data transfers, but FAT does not.

Note: Windows Explorer, supported by the size, does not incur any harsh messages. This means that if the file takes up 100 MB and requires two hard downloads, then only 100 MB of disk space will actually be used, at that time Windows Explorer Show Wikoristan 200 MB disk. At this point it is necessary to take care of the backup copy with the help of the hardest instructions.

Tim is not less than we will add if you have not succeeded in this method, but it is necessary to use it with caution. So, the logic of “changing files in different directories means changing different data” is so important. this method don't get stuck. This means that if you change one file in one copy, you will change the same file in all copies. If you use a backup program that supports heavy-duty operations, it is recommended that you make all changes through the program rather than making manual changes.

Final words about reservation

Regardless of the variety of methods, backup is one of these areas where the choice of victorious technologies is guilty of truthfulness, in view of the revealed orders. It is not advisable to rely on methods based solely on characteristics such as speed and disk space. So, for example, if you save backup copies on a portable hard drive, using technologies such as delta block copying can save you the trouble, but you can create such copies completely in situations if the backup program is not available (for example, You will need to edit the document on another computer, otherwise the program has been corrupted for some reason, and there is no access to the Internet to download the installer). This time, the primary incremental copy (without delta) will be more efficient, so you can manual mode renew required documents. Therefore, make sure to choose technologies with a healthy stomach.

Now, you know the terms of backup, and you also understand what the methods mean in theory and in practice.

In the form of a permanent backup, in which not all data (files, sectors, etc.) are copied, but only those that have changed since the last backup. To save time, the copy can be blocked different methods For example, on systems running Windows operating systems, a file-specific attribute (archive bit) is selected, which is installed when the file is changed and discarded by the backup program. In other systems, you can check the modification date of the file. It is clear that the scheme for this type of backup copy will be inferior if you sometimes carry out an external backup. With a completely updated system, it is necessary to update the remaining copy created by the Full backup, and then update the data from the incremental copies after creating them. This view The purpose of creating archival copies is to reduce the amount of money that is spent on information storage devices (for example, to reduce the speed of vikory-stitched printers). It is also advisable to minimize the time required to set up a backup copy, so that you can be extremely careful while the machine is running smoothly, or pump up a lot of information. Incremental copying has one caveat: step by step updates rotate and require deleted files during the renewal period. For example: it is acceptable that on weekends the copying is completed incrementally, and on weekdays incrementally. Koristuvach created a file on Mondays, changed it on Tuesdays, changed it on Wednesdays, and deleted it on Thursdays. So, during the subsequent step-by-step updating of data for the current period, we remove two files: with the old names the week before renaming, and with the new names created on Wednesday. The result was that different incremental copies were saved different versions the same file, and as a result all options will be updated. Therefore, with subsequent updates from the archive “as it is”, it makes sense to reserve more disk space so that the deleted files can be accommodated.

Advantages of the method:

Efficient storage backup - Shards of files are saved, changing from a permanent or incremental backup, backup copies take up less space.

Shortest hour for backup and update - Incremental backup takes less than an hour, less than an hour for differential backup.

Not enough method:

Backup data is saved on multiple devices - Backup fragments are stored on multiple devices, updating the device after an accident can take more than an hour. In addition, to effectively update the functionality of the nose system, they can be arranged in the correct order.

Incremental backup allows you to effectively save information that is constantly changing: documents, projects in development, mail backup, etc. Handy Backup - program for incremental backup any files.

What is incremental backup?

Incremental copying- This is a copying method in which, before the beginning of a copy, a set of data is added, bit by bit, to reflect changes in the data (these bit by bit changes in the data set are called increments).

For example, if out of 200 files in the output set only 3 are changed, then they will be copied to the next incremental backup.

An incremental backup program can make it possible to regularly make such additions, as well as Pokrokal renewal whenever necessary.

In this mode, incremental backups are repeated cyclically, starting with a permanent backup of data. When the number of incremental backups reaches a specified value or age, the entire cycle is repeated automatically, starting with a new copy.

The key advantage of a mixed incremental backup is its ability to remove long increments. Here are a few steps you can take to speed up the backup process to make updating your data more reliable and flexible.

How to remove incremental file backup from Handy Backup?

It is very easy to program an incremental backup with Handy Backup. Select Croc 4 in the inserted mode* Incrementally or else mixed incrementally copying.

For mixed incremental copying Also set the dialog for adjusting the versions to repeat incremental backups at least once or twice.

* For Krok 1 created settings, you must check the box next to the “Passed mode” item.

Recommended solutions for incremental backups

Cross-platform solution for incremental backup

Incremental copying of files and folders in Linux and incrementally

Besides the Windows version, Handy Backup is also fully supported by programs that are installed Linux distributions, based on Ubuntu 16.04 and 14.04. The program also provides a Java workstation for Windows, Linux and FreeBSD machines.

Try Handy Backup's capabilities for incremental file backup on your own,
having enchanted and installed a cost-free 30-denny I'll try the trial version programs with a lot of functions!

What is incremental backup?

Incremental backup (incremental backup)- this is a type of retail backup, if not all files of the device are copied, but Only new and changes from the moment of making the previous copy - a new one or an additional one. This is essential to save disk space and will significantly speed up the process of creating a backup copy.

The name of this type of backup is similar to the English word Incremental backup- Dodatkovy. In Russian language it is called Dodatkov. Tsey type Backup copying is the most widespread, but like all methods, it also has its pros and cons.

This type of backup is ideal for backing up large amounts of data, 50 gigabytes or more. The speed of the created backup will be high, and the size of each additional copy may be more than 100-200 megabytes.

Pros:

• Shvidke gate backup copies
• Small amount of money that a backup copy takes up (saving disk space)

Disadvantages:

• Foldability of setup (updated with a new copy of Full Backup)
• The ease of updating files (updated with a new copy)

Note: Create incremental backups because the output data is large and copying files and saving disk space is important to you. The optimal frequency for creating Incremental backup is 1 time per year, if the output files change frequently, and 1-2 times per day, if the files are rarely edited.

How to create an incremental backup using Exiland Backup

Exiland Backup is a simple utility for backing up and synchronizing folders across networks, FTP, between PCs and servers. Supports all types of backup files.

Qia universal program A good choice for backing up 1C file files, Wordpress sites and other CMS, copying site files from an FTP server to a local PC.

After launching the program in the main window, click on the button to create a new task on the panel, enter the name of the task, for example, “My Documents” and click “Next”. Now, as shown in the screenshot below, select the copy type “Incremental”.

Below you can separate a number of backup copies so that the oldest backup copies are automatically deleted before creating a new, fresh copy. This adjustment will save disk space (not available in the Free version). Also, you can divide the number of incremental copies between additional ones. When this exchange is reached, a second copy will be made.

When you select a template for naming backup copies, you can add a row, such as “(incremental),” for incremental copies so that they can be visually easily differentiated from new ones.

Once the task has been created, you will need to check the time for launching - you can start the task manually by pressing the "Viscont" button located on the top panel.

Mikhailo, software developer

Other types of copying.