Currently, the company has a high demand for business continuity and disaster recovery data, the main management objectives are as follows:
1, provides data security and avoid business risks.
2, to ensure application high availability, eliminating unplanned downtime, reduce unplanned downtime, improve business continuity.
3, considered in conjunction with the program, improve return on investment.
Traditional enterprises have been built or are planning business continuity and data disaster recovery system. We will generally consider disaster recovery mode in three lines:
1, the local disaster recovery: availability and separate read and write operations, in order to improve business continuity
2, city disaster: both business continuity and data security, in order to respond to regional
3, Disaster Recovery: data security as the goal, to deal with regional data risk.
Each different ways for disaster recovery management objectives require different solutions to meet the demand.
Under the traditional model of enterprise data disaster recovery building program
Disaster recovery is a comprehensive systems engineering, disaster recovery technology related to the specific application, system disaster recovery construction of more technology to switch replication, data and application data, deleting data, encryption and data transmission, data storage, etc., most importantly, data disaster recovery, at present, the mainstream data disaster recovery mode under the traditional model are:
1, the database logic based replication: Replication stream Shareplex for Oracle, Oracle GoldenGate, MySQL from the main complex, PostgreSQL logic;: copy log data acquired in real time, asynchronous scheme, typical
2, based on the physical replication databases: copy, asynchronous scheme, the method using a typical representative of the physical log: Oracle Datagurad, PostgreSQL physical stream copying, SQL Server AlwaysOn;
3, the host-based replication logical volumes: in units of logical volumes, copy, through typical TCP / IP network: Symantec VVR;
4, based on the block copy storage: a storage device-dependent transport network technology can be employed synchronous and asynchronous, typical: EMC, HP, IBM Storage vendors.
The above-described four modes respectively copied from application to application underlying the upper layer, the smaller the amount of data replication, the bandwidth occupied by lower and lower dependence on fewer hardware, increasing the flexibility of replication , each solution has its own advantages and disadvantages, copy the database logic high efficiency, high spirit, active-active database is available, but the data consistency is not guaranteed and more difficult to maintain; physical database replication system for high environmental requirements, requirements the same version of the database, the same operating system platform, the standby database can only be opened in read-only mode; efficiency is poor logical way, under normal circumstances will not be used to make the database disaster recovery plan; high storage replication data consistency, better efficiency but the standby database is not available, it is possible to the main library for bad blocks are also copied.
Ali cloud data disaster recovery building program
With the advent of the cloud, most companies built on public cloud own data center or build a private cloud, public cloud or hybrid cloud and private cloud combined with locally, regardless of the presence in what form, will consider the construction of disaster recovery cloud factors.
Currently each cloud vendor are based on the basis of data replication snapshot or copied on to develop their own disaster recovery or backup policy.
Ali cloud data disaster recovery architecture diagram
DTS: Data Transmission Service, a support data exchange between multiple data sources, Ali cloud streaming service provided. It provides data migration, real-time data and subscribe to real-time data synchronization and other data transmission capabilities. In the database disaster recovery solutions using cloud Ali DTS can move data and real-time synchronization between the various databases, database disaster recovery so as to lay the foundation for the most important.
DBS: Database Backup Service, provides continuous data protection for databases, low-cost backup service. It provides strong data protection for multiple environments, including enterprise data centers, other cloud vendors. DBS provides data backup and restore operations of the overall program, with real incremental backup, the nearest second data recovery. Ali cloud DBS can be used for data backup between various database database disaster recovery solutions.
Hybrid cloud storage array: Ali cloud Hybrid cloud storage array supports users to create multiple versions of an array of local snapshot storage space, and each time a snapshot image uploaded to cloud storage as a backup, hybrid cloud storage array can support local storage and cloud storage the file data synchronization, data stored off-site disaster recovery in the cloud. Hybrid cloud storage array and also traditional backup software (Veritas, Commvault, etc.) combined, as traditional backup software, backup storage, data backup push the cloud, unified disaster recovery and backup solution files, images, databases.
Companies could use their own backup or disaster recovery strategy design, technical and practical database itself, the disaster recovery data to the cloud, cloud vendors can also be a practical solution, and implement disaster recovery conducted online between online, or perform disaster recovery in Yunshan design.
Tencent cloud data disaster recovery building program
Tencent cloud data disaster recovery architecture diagram
Tencent cloud data disaster recovery advantages:
1. High compatibility: supports backup data in virtual and physical environments success on the cloud, covering the mainstream virtual machines, databases, email systems and unstructured documents;
2. High performance: within one hour while the fastest backup hundreds of virtual machines, TB can reach levels of the order of minutes instant data recovery, data deduplication technology can save 70% of the storage space;
3, high protection: the use of CDP technology to achieve effective protection systems to support regional / off-site disaster recovery, support the rapid recovery from the cloud to mount effective protection of business can be restored back;
4, low cost: no need to purchase additional hardware, significantly reduce costs, TCO savings up to 60%; simultaneously connect cloud storage to achieve pay by volume, flexible billing.
5, Tencent cloud-based snapshots and mirroring, backup and transfer data quickly realize the database of the virtual machine;
6, priority guaranteed service system, the backup data transfer load shifting, optimization data deduplication technology, under the premise of ensure backup effect, greatly reducing the network overhead;
7, standard, low frequency, integrated tiered storage archive, back up data to effectively deal with different business value;
8, support remote standby, backup mechanism supports multiple three centers in two, not capped cloud storage.
Select the enterprise data disaster recovery building program
No matter how complex enterprise business environment, the core of disaster recovery is to solve the problem more published data synchronization and application changes, but according to RPO and RTO requirements, development of disaster recovery strategy, data synchronization of core technology is mainly described above way synchronization applications use incremental snapshot of the way. Various cloud vendors have developed their own data disaster recovery solutions, enterprise application according to the characteristics of their own, to choose their own data disaster recovery plan