Huawei Cloud provides Huawei ECS Snapshot, cloud disk backup Huawei ECS Back up these three simple and easy to use backup tools, but what's the difference between them? When should I use snapshots and when should I use backup? It is believed that many people do not understand the mystery, so today Micronet will take you to study it.

First, let's talk about the concept of Huawei Cloud Backup. Copying one copy of a file is called backup. For example, copying important files to a USB disk, or storing one copy in the mailbox or online disk. When a file is deleted or damaged by mistake, the backup file can be copied back. That is to say, backup is to copy the original file to the original data.

Snapshots are not backups in nature. Snapshot is to mark the current storage status, just like taking a photo. When the system fails or files are lost in the future and need to be restored, you can take the time shuttle to go back to the time when you took photos. The principle of snapshot is very simple. In virtualization technology, every Huawei ECS, including hardware configuration and virtual machine disks, is a file. When taking a snapshot, you can understand that the disk file of the current Huawei ECS should be marked with a mark, set to read-only status and not allowed to write in, and then create a new disk file, When new data is written, it is written to a new disk file. When snapshot restore is required, system restore is achieved by starting the Huawei ECS using the disk file before the snapshot.

Technically, snapshots do not occupy more disk space, but each snapshot will generate an additional truncation action and a new file write point. Snapshots have a certain impact on the disk performance of Huawei ECS.

Cloud disk backup and Huawei ECS backup are based on the snapshot technology to take a snapshot of the disk first, and then copy the read-only disk file after the snapshot is created to the object storage for storage. The biggest difference between snapshot and backup is that backup copies the same data, while snapshot has only one copy of data. So remember that snapshots are not backups.

Cloud disk backup is to back up the snapshot file of the cloud disk after taking a snapshot of a single cloud disk of Huawei ECS. Huawei ECS backup is to take snapshots of all cloud disks of Huawei ECS and back up the snapshot files of all cloud disks.

Let's talk about the usage scenarios again.

Snapshots are suitable for major change operations such as application upgrade, software upgrade, vulnerability patching, etc. Once the operation is unsuccessful and affects the business, it needs to be able to quickly roll back. You can take a snapshot before major changes, and use snapshot rollback if it fails. If it succeeds, you can delete the snapshot. Snapshots and restores are extremely fast and belong to a low-cost backup scheme.

Cloud disk backup is suitable for Huawei ECS. The main application software and data are stored on the data disk. If there is no important data changed on the system disk, you can only do cloud disk backup on the data disk. Of course, if there is no data disk, there is only one system disk, and only the system disk can be backed up.

Huawei ECS backup can back up the system disk and data disk at the same time. Both cloud disk backup and Huawei ECS backup store backup files separately on dedicated object storage, so the speed of backup and recovery is slow. The first backup is a full backup, and the later is an incremental backup.

Huawei ECS snapshots, cloud disk backup, and Huawei ECS backup are simple and fast data backup methods provided by Huawei Cloud and can only be used on the cloud platform. Its disadvantage is that it is only available on the cloud platform, and the interval between regular backups using policies should be at least one hour, so continuous backups cannot be achieved. Therefore, for key systems such as databases, it is recommended to use the database manufacturer's own solutions or third-party backup software for logical backup of databases, or even use CDP software to achieve real-time disaster recovery at the data block level.

The above is the analysis of the neutrino network What is the difference between Huawei ECS snapshot, cloud disk backup and ECS backup? I hope I can answer your questions. 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 ECS to open their own online business. It has perfect industry solutions and excellent cloud computing technology. Self developed pure The SSD architecture ECS, with 50000 IOPS random read/write speed and 800 Mb/s throughput as performance indicators, broke the industry record. ECS elastic ECS adopts pure SSD architecture hardware devices can easily obtain and enable the cloud in just a few minutes to meet your computing needs. Expand the flexibility of resource use, save computing costs and simplify IT operation work enables you to pay more attention to the innovation of core business.