In the process of network service deployment and server use, most data loss is caused by hardware failures, software errors, operation errors and natural disasters. Unless you use Huawei VM, the most effective and direct way to prevent these disasters from affecting enterprise websites is to back up data. Mastering the correct server data backup method can minimize storage space, reduce the impact on computing resources and bandwidth usage, ensure data security, and recover data as quickly and easily as possible after a disaster. So what are the methods for webmasters to backup data on the server?
1. Full backup
Full backup is the simplest form of backup, including all folders and files that need to be backed up. Generally, we compress files to save space, but even compressing full backups will take up a lot of storage space. Extensive access to backup disks also requires additional bandwidth.
The advantage of full backup is that it is easy to restore. Because all data can be obtained at any time, data recovery is fast and simple. In theory, full backups should always be performed because they are the most comprehensive and independent. But this usually takes time. Except for major updates (such as operating system upgrades or new software installations), the entire backup is usually performed once a week. Perform incremental or differential backups at intervals.
2. Incremental backup
Because full backups are time-consuming, we may need more incremental backups to reduce the time required to perform backups. Incremental backups only back up data that has changed since the last backup. For example, if you performed a full backup on Monday, you can perform an incremental backup on Tuesday to back up files that have changed since Monday. On Tuesday, another incremental backup was performed for files that have changed since Tuesday. Because the amount of data for each repeated backup is very small, storage space and network bandwidth are saved. This also allows multiple versions of the same file.
However, incremental backups use more computing power because each source file must be compared with the previous full backup and each subsequent incremental backup to determine whether the data is new or changed. And the recovery process is very slow. You need to restore the latest full backup first, and then perform incremental backup. If a backup fails (full or incremental), the recovery cannot be completed.
3. Differential backup
Differential backup is between full backup and incremental backup. Although incremental backup modifies all files since the last full backup or incremental backup, differential backup provides an intermediate location by backing up all changed files since the last full backup. A differential backup is actually a cumulative backup of all changes made since the last full backup.
Compared with incremental backup, the recovery of differential backup is faster; Only the last differential backup and full backup are required to create a full restore. To save storage space, you can set a differential backup to overwrite the last differential backup. Like incremental backup, differential backup requires additional network bandwidth to compare the current file and the backup file, so that only changed files can be found and backed up.
These are the ways that Micronet introduces to webmasters to backup data on the server. I hope they can help us. But if we want to avoid this trouble, we can choose Huawei VM. Huawei Cloud, a micro network agent, is an excellent cloud computing service provider. It can provide the best service for friends who want to rent Huawei virtual machines to set up private game servers. It has perfect industry solutions and excellent cloud computing technology. The self-developed pure SSD architecture ECS breaks the industry record with 50000 IOPS random read/write speed and 800 Mb/s throughput as performance indicators. The ECS elastic virtual machine uses pure SSD architecture hardware devices. It can easily acquire and enable the cloud in just a few minutes to meet your computing needs. Expanding the flexibility of resource use also saves you computing costs, simplifies IT operations, and enables you to pay more attention to core business innovation.
