Shulou(Shulou.com)06/02 Report--

In this issue, the editor will bring you which is better, vps or CVM. The article is rich in content and analyzes and describes it from a professional point of view. I hope you can get something after reading this article.

In terms of stable product performance, failure migration, upgrade expansion and storage mode, the CVM is better.

Most CVMs are distributed storage, and vps hosts are usually local storage. Distributed storage not only improves the reliability, availability and access efficiency of the system, but also is easy to expand, reducing the unstable factors introduced by general hardware to the minimum.

1. High performance read and write

High-performance distributions usually manage read and write caches efficiently and support automatic tiered storage. Distributed storage improves the response speed of the system by mapping data from hot spots to high-speed storage; once these areas are no longer hot spots, the storage system will move them out of high-speed storage.

two。 Support for hierarchical storage

Due to loosely coupled links over the network, distributed storage allows high-speed storage and low-speed storage to be deployed separately, or mixed in any proportion.

The advantages of tiered storage can be best achieved in unpredictable business environments or agile applications. The biggest problem of cache hierarchical storage is that when the performance pool misses, the granularity of extracting data from the cold pool is too large, resulting in high latency, resulting in overall performance jitter.

3. Consistency of multiple copies

Different from the traditional storage architecture which uses RAID mode to ensure the reliability of data, distributed storage uses multi-copy backup mechanism. In order to ensure the consistency among multiple data replicas, distributed storage usually adopts the strong consistency technology of writing one copy and reading multiple replicas. Mirror, stripe, distributed check and other methods are used to meet the different reliability needs of tenants.

4. Disaster recovery and backup

In the disaster recovery of distributed storage, an important means is the multi-point-in-time snapshot technology, which enables the user production system to save each version of data at a certain time interval. If the user has multiple servers or virtual machines that can be used for system recovery, through comparison and analysis, we can quickly find out which time point needs to be restored, which reduces the difficulty of fault location and shortens the location time.

The above is the better vps or CVM shared by Xiaobian. If you happen to have similar doubts, please refer to the above analysis to understand. If you want to know more about it, you are welcome to follow the industry information channel.

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