What determines the fault tolerance of dedicated server cheapest and how to check it?

The main requirements for a dedicated hosting server are that it stores a large amount of information, gives constant access to it, does not lose files, and quickly processes requests. Important parameters are not only performance and price, but also the security and reliability of information. After all, no matter how high the performance and favorable price, they lose all meaning if most of your data is constantly lost.

Data redundancy, possible at the software or hardware level, is used to deal with failures and ensure fault tolerance.

Redundancy at the hardware level of the device is often used and gives good results. For greater reliability, the web host dedicated server sometimes uses double redundancy, when data is saved to 2 disks at once. The multiplicity of redundancy can be increased further, because the higher it is, the less is the probability of data loss, but you should not overdo it, because the space occupied will be quite large.

Software copying data is less popular, but it is developing very fast today and may soon overtake its competitor in the amount of data backed up. Software reservations differ in the principle of operation. In this situation, since the reliability of the iron is questioned, the system backs up the data at the software level, storing their copies on various physical media.

The advantage of such redundancy is lower equipment costs with the same fault tolerance indicators. Another positive feature of such a solution is simpler optimization, for example, balancing data when placed on several sites.

A good example is PStorage. It does not bind to a specific hardware and works on any computers. This architecture allows the loss of any server entirely. This is possible because multiple copies of data are stored on different physical servers in an amount not more than one. As a rule, there are three copies to protect themselves even with the loss of two servers.