Lifesaving straw talk about server backup and disaster recovery

I. Preface

When it comes to the importance of data backup, I think many of my friends have a deep understanding. Because of the weak protection of data security, there is no immediate backup of important files. Or human factors cause important files to be lost, and it is too late to regret it.

In the case of personal data, if the data is damaged or lost, through professional recovery software or data recovery company, the data may be saved, and the damage may not be very large. However, in enterprise applications, the security of data is related to the lifeblood of the enterprise and is a problem that enterprises need to focus on.

With the continuous improvement of enterprise information in recent years, the amount of data that enterprises need to store has grown geometrically. It is not uncommon for hundreds of GB or even terabytes of storage capacity. At the same time, the stable availability requirements of data are also increasing. For example, in key applications such as telecommunications, banking, securities, and medical, data 7*24*365 is required to be stable and available. We can imagine that if the customer's customer data is lost, how much hard-earned resources will be lost; if the data in key areas such as banking, telecommunications, and medical care are damaged, the damage caused can not be estimated.

The current data security issue has become an issue of increasing concern to enterprises. The main causes of data damage are as follows: 1. Natural disasters such as floods, fires, earthquakes, lightning, etc. cause damage to the computer system. 2. The failure of the computer equipment causes data corruption, aging of storage devices such as hard disks and tapes. 3, viruses or human factors, accidental deletion of data and so on.

Second, reduce the way of data corruption

For the reasons of the three types of data damage mentioned above, the first one is an uncontrollable objective factor, if enterprises need to avoid data damage caused by natural disasters It is necessary to prepare disaster recovery in advance, for example, by local backup and remote storage, and to save important data backups to other regions, cities and even countries for storage, such as backup of some key application areas and even renting safes for different city banks. save. These may sound like a myriad of nights, but "not afraid of 10,000, I am afraid of it." If the backups are placed in the same location or city, if there are large natural disasters such as earthquakes and tsunamis, these backups are even different in the same city. I am afraid that the location cannot be completely saved. In addition to this "cold backup" approach, online backups can also be made through hot backup sites in different regions.

The second reason is the reason for the computer hardware. Although this factor is unpredictable, for example, we can't predict the normal working storage device will suddenly stop working or be damaged. However, this situation can also be avoided as much as possible, such as regular maintenance inspection of computer equipment, regular data backup, etc., so that even if the storage device is suddenly damaged one day, the data can be quickly recovered through the previous backup, so that the loss is reduced. To the minimum.

The third reason is the virus or human factors. This factor can also be reduced by deploying firewalls, installing system patches, regularly checking for viruses, and regular backups. In practical applications, the third factor has a much greater chance of appearing than the first two factors, so in addition to increasing the company's security awareness and security, regular data backup is also possible to minimize this data damage. An important means.