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Construction basis and standard of disaster recovery project

Disaster recovery level

  • Level 6: Zero data loss and remote cluster support
  • Level 5: Real-time data transfer and full device support
  • Level 4: Electronic transmission and complete equipment support
  • Level 3: Electronic transmission and some equipment support
  • Level 2: Alternate site support
  • Level 1: Basic support
Disaster recovery level RTO RPO
first stage More than 2 days 1 to 7 days
second stage More than 24 hours 1 to 7 days
third stage More than 12 hours Hours to 1 day
fourth stage Hours to 2 days Hours to 1 day
fifth stage Minutes to 2 days 0 to 30 minutes
sixth stage Minutes 0
GB/T20988-2007 "Information System Disaster Recovery Specification"
Element Requirement
Data backup system
  1. Full data backup at least once a day;
  2. Backup media off-site storage;
  3. Using remote data replication technology and using communication networks to copy critical data to alternate sites in real time.
Backup data processing system All data processing equipment required for disaster recovery is equipped and in a ready or running state.
Standby network system
  1. Equipping communication lines required for disaster recovery;
  2. The network equipment required for disaster recovery is equipped and in a ready state;
  3. Communication network automatic or centralized switching capability.
Standby infrastructure
  1. There is a site that meets the storage conditions of the media;
  2. Sites that meet the operational requirements of backup data processing systems and backup network equipment;
  3. There are sites that meet the requirements for the recovery of critical business functions;
  4. The above venues should be maintained in 7x24 hours operation.
Professional technical support ability In the Disaster Backup Center 7x24 hours there are full-time:
  1. Computer room management personnel;
  2. Data backup technical support personnel;
  3. Hardware, network technical support personnel.
Operation and maintenance management ability
  1. Have media access, verification and dump management system;
  2. Periodically validate the backup data according to the characteristics of the media;
  3. Have a standby computer room operation management system;
  4. Hardware and network operation management system;
  5. There are real-time data backup system operation management system.
Disaster recovery plan There are fully tested and rehearsed disaster recovery plans in place.

Dr Policy, application tier, and service system RTO/RPO

Importance Degree Class Definition Service interruption impact
Class A Foam System The system is directly oriented to the company's key business and has a significant impact on the company's daily external operations after interruption Systems that are disrupted for short periods of time and have a significant impact on companies, external institutions and society; A system where a short period of disruption would severely affect a company's critical business functions and cause significant economic losses
Class B Foam System Systems that support the company's business services and play an important role in the company's business at all levels. The interruption of such systems will have a great impact on the work of relevant departments or some businesses of the company A system where a short period of disruption would affect some of the company's major business functions and cause significant economic losses
Class C Foam System Provide direct information services and business support systems for some relevant organizations or personnel of the company. The interruption of such systems will have a certain impact on the business Systems that are interrupted for a short period of time will affect non-critical business functions of the company and may cause certain economic losses; A system that allows a service function to be interrupted by an event
Class D Foam System A system that provides indirect support for some of the company's related businesses. This type of system is relatively independent and does not depend on other information systems. Therefore, service interruption has a small impact Short event outages will affect the company's non-critical business functions without causing economic loss to the system

Dr Project construction process

Dr Project construction process

Implement an overall plan for disaster recovery

Project Startup
The project was officially launched, and relevant personnel entered the project and started the project work
Investigate And Survey
  1. Complete customer's current environment and configuration research
  2. Conduct application correlation analysis and implement planning recommendations
Advisory Report
  1. 《Current situation research report》《Disaster recovery policy report》
  2. 《XX Disaster recovery plan》《System disaster switchover operation manual》《Disaster recovery operation and maintenance management system》and so on
Dr Implementation
  1. Cloud resource deployment
  2. Migrate service systems and databases
Verifying Dr Services
  1. Dr Environment service association
  2. Verifying services in the Dr Environment
Disaster recovery drill
  1. HJWD
  2. Switchover of the Dr Test
Training acceptance
  1. Disaster recovery system training
  2. Project acceptance
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