异地灾备数据中心规划(数据中心灾备手段)

Remote disaster recovery, as the name implies, is to build One or more sets of the same application or database further improves the disaster tolerance of data against various possible security factors, and can play a role in security and continuity of enterprise applications and databases.
Two major categories
Considering that different enterprises and institutions have different requirements for data security and business continuity, we divide remote disaster recovery into two major categories: data-level disaster recovery and application-level disaster recovery .
Data-level disaster recovery: refers to the establishment of an off-site data system, which is a usable copy of local key application data. When a disaster occurs to the local data and the entire application system, at least one copy of the business-critical data is available off-site. This data can be a completely real-time copy of the local production data, or it can be slightly behind the local data, but it must be available.
Application-level disaster recovery: Based on data-level disaster recovery, a backup environment equivalent to the local production system is established in a remote location, including hosts, networks, applications, IP and other resources. When a disaster occurs in the local system At this time, the off-site system can provide a fully available production environment.
CDP off-site disaster recovery VS traditional off-site disaster recovery
Traditional off-site disaster recovery solutions are mostly based on remote replication technology. Remote replication refers to the use of replication technology to store data in a remote disaster recovery center in a synchronous or asynchronous manner. There are three main implementation methods: 1. Using host remote replication software or hardware. 2. Utilize replication software that stores itself. 3. Utilize database software products. Remote replication can achieve data-level disaster recovery, but once a disaster occurs, business continuity cannot be guaranteed. In addition, once a database logic error or human deletion occurs, remote replication cannot repair data errors, nor can it retrieve accidentally deleted data, let alone 100% recovery of data and guarantee of data availability.
Helijiyi’s off-site disaster recovery solution is based on CDP continuous data protection technology. It can build a full-demand platform for remote desktop or server-side files, databases and applications. It can prevent data loss, repair data errors, and also It can ensure business continuity and fully meet customers' different data security and business continuity requirements.

Commercial bank data centers should be equipped with sites, infrastructure, networks, information systems and personnel that meet business operation and management requirements, and have the capabilities to support various business operations. Ability to discontinue service.
Incorporated commercial banks with total assets of more than 100 billion yuan and branches across provinces, and provincial-level rural credit unions should establish off-site model disaster recovery centers, and the disaster recovery capabilities of important information systems should meet the requirements of the "Information Security The disaster recovery level defined in "Technical Information System Disaster Recovery Specifications" is level 5 (inclusive) or above; other legal person commercial banks should set up local model disaster recovery centers and realize off-site backup of data, and the disaster recovery capabilities of important information systems should reach the "Information Security Technology The disaster recovery level defined in "Information System Disaster Recovery Specifications" is level 4 (inclusive) or above.

"Two places and three centers" means the production center, the same city disaster recovery center, and the remote disaster recovery center. From a sense point of view, it means both the same city disaster recovery and the remote disaster recovery, combined It’s called two places and three centers.

For example, China Construction Bank has built a main center in Beijing and Shanghai Phase I and Phase II data centers to form a disaster recovery architecture model of three centers in two places. One of the CCB Shanghai centers is only used as a backup data center. CCB’s nationwide system brings disaster recovery services. At the same time, Shanghai Waigaoqiao Data Center, as a disaster recovery center, can naturally form a same-city disaster recovery relationship with CCB Shanghai Phase I Data Center and an off-site disaster recovery relationship with the main center in Beijing, thus preventing CCB's disaster recovery in different places and in the same city. Disaster situation.

Technology selection metrics for two places and three centers:

When building a disaster recovery system, the first consideration is to select reasonable data replication based on the actual situation. technology. When choosing a reasonable data replication technology, the following factors should be mainly considered:

1. Disaster tolerance: clarify the types of disasters that the computer system needs to withstand, such as system failures, communication failures, long-term power outages, fires and earthquakes, etc. Different backup and protection plans are adopted for various unexpected situations.

2. Degree of business impact: It is necessary to clarify the extent of losses caused by business interruption when the computer system fails to work unexpectedly, which is to define the user's maximum tolerance time for computer system failure. This is an important technical indicator for designing backup solutions.

3. Data protection level: Whether the database is required to restore all submitted transactions and require real-time synchronization to ensure data continuity and consistency. This is an important basis for the complexity of the backup plan.

Reference for the above content:

-Several construction plans for two places and three centers in disaster recovery construction