What is the backup and why is it needed? We will try to answer this question. It is well known that important data stored on the disk often have a value that exceeds the cost of the computer itself many times over. Sadly, most of us begin to think about the safety of our files only when trouble has happened, and important information is lost. And the reasons for this situation can be very different: user error, leading to the removal of important files, computer or disk failure, malicious action of the virus.
How to avoid the unpleasant consequences of losing information and prevent a repetition of the situation further? As you know, prevention is easier than cure; this truth is very clearly manifested here. Recovering files erased from disk is much more difficult than trying to pre-save your data on other media.
This is the idea of backup: a backup copy of your data created on another medium will not suffer in any way if something happens to your main working disk.
Consider the basic backup methods. There is a full and differential backup. In the first case, a full copy of all important data is constantly made, in the second, usually a full text of all information is formed at the beginning of the month, and then only backup files of the changed files are backed up. As can be seen from the description, the second method is more progressive, requires less space on the media and time to create copies. Among the shortcomings, there is slightly greater complexity of data recovery (data recovery requires two archives – for the beginning of the month and the file created last), as well as the need to support such backup from the software used for backup. Now with Master Data Information the supports are perfect.
- Whatever type of copying you would choose, the question arises, how often to do it, and for how many carriers to duplicate information. Here, of course, it all depends on the importance of the report itself and your capabilities. If your data is of high importance, you should make backups as often as possible (for example, every day) and duplicate to multiple media. To ensure the reliability and safety of your data, try to do in this case at least 2-3 carriers, and do not store them in one place. This will reduce the impact of various contingencies.
- If the data you are going to back up is not too important, it is enough to do without saving to one medium and copying the data to another partition of the hard disk of the computer.
As storage media for saving your backups, bulk flash drives or solid-state hard drives are best suited. This is a relatively expensive option, but the most suitable for important data, because these drives are not afraid of magnetic fields and they are extremely affected by physical impact and impact. In less critical cases, or as an additional measure, you can consider copying data to other computers on a local network or storing information on CD or DVDs. This option is a little less reliable but much cheaper, and if the cost of a backup system creation solution is also important, you should pay attention to it.
Finally, for the process of saving data, you should pay attention to the software used. It is desirable that it supports data compression and differential copy technology, as well as the launch of the task on a schedule. These capabilities have the majority of software products of well-known developers.
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