Shulou(Shulou.com)06/03 Report--

The data information generated by the server carries on the corresponding storage and backup process, so as to ensure the security of the data, maximize the security of customer data, avoid data loss, and cause unnecessary losses.

1. Hardware

As far as the server is concerned, we can start with the hardware, and the backup can be realized through the hardware.

For example: raid1 can achieve the function of real-time backup, the server adds two hard drives to use at the same time to make raid1, forming the function of real-time backup of two hard disks. Once there is a problem with one hard disk, the other hard disk can save complete data without causing data loss.

For devices using this RAID1 structure, the RAID controller must be able to read two disks and write to two mirror disks at the same time. You can also see that there must be two drives from the structure diagram below.

Because it is the mirror image structure, when there is a problem with a set of disks, the mirror image can be used to improve the fault tolerance of the system. It is easy to design and implement. Only one piece of data can be read each time a disk is read, that is, the data block transfer rate is the same as that of a separate disk. Because the verification of RAID1 is very complete, it has a great impact on the processing capacity of the system. Usually the RAID function is implemented by software, and this implementation method will greatly affect the efficiency of the server when the server load is heavy. When your system requires extremely high reliability, such as data statistics, then RAID1 is more appropriate. And RAID1 technology supports "hot replacement", that is, the faulty disk is replaced without power outage, and as long as the data is restored from the mirror disk. When the primary hard disk is damaged, the mirrored hard disk can work instead of the primary hard disk. Mirrored hard disk is equivalent to a backup disk. It is conceivable that the security of this hard disk mode is very high, and the data security of RAID 1 is the best at all RAID levels. But its disk utilization is only 50%, which is the lowest of all RAID levels.

two。 Software

You can use backup software to back up the folders and disks of the system, although the operation takes time and manpower, but the security is more reliable to ensure that there is no loss or omission of data.

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