Timestamp: 18:01:21, August 19, 2020
part4: data disaster recovery
10410: Disaster recovery capability index
RPO----recovery point objective;
The maximum amount of data loss allowed by the business system during a disaster is used to measure the data redundancy backup capability of the disaster recovery system;
-RTO:------Recovery time objective
The time required for the information system to recover from the disaster state to the operational state is used to measure the business recovery capability of the disaster recovery system;
10420: International Disaster Recovery and Recovery Capability-Understanding
The amount of data loss is 0--------------
Data level
Business level
August 19, 2020 21:01:06
Operational protection and restoration;
Tianjin's fire, data protection
Platform, backup, recovery;
Regular, consistent, and non-disruptive backups;
10430: Disaster recovery mode
--Data disaster recovery
---High availability of application
--Same level disaster tolerance design,
Downgrade disaster tolerance;
Choose according to the importance of the data;
10440: Disaster recovery mode
Three types of disaster recovery solutions:
From and storage level;
From the host level;
From the application layer;
Build a disaster recovery system based on storage data replication technology;
Rewrite the operation log to obtain a backup consistent with the source data;
=========Storage mode=======================
10440--Disaster recovery link design (10KM)
The cost is lower than FC's;
If the distance exceeds 10 kilometers, lease the SDH./Wavelength Division Multiplex line through IP-SAN;
10460: Disaster recovery link design:
10470: Schematic diagram of data disaster recovery
---MSCS
10480: Two places and three centers
Production center, intra-city disaster recovery center, remote disaster recovery center;
Bare fiber for wavelength division multiplexing,
WAN link: SDH, mstp
GCO ----- vcs
Draw three new maps of the two places
Three-step operation: stop, switch, resume
Manually switch modes when rolling back
August 19, 2020 21:37:41