Relationship between hot standby and Data Backup

Some User When planning dual-machine hot backup or dual-Machine backup, there will be the problem: I already have raid and tape backup, do I have to do dual-Machine backup? Or, if I have a dual-Machine backup, is it necessary to back up the tape?

Raid and Data Backup is very important. However, raid Technology Only Solution Hard Disk The backup can only solve the problem System Recovery after a problem occurs. And once ServiceTool There is a problem, whether it is a hardware problem orSoftware System Will cause problems Service . Therefore, raid and Data Backup Technology Cannot solve and avoid Service Interruption issues. For continuous and reliable provision Application Service OfSystem Dual-host is very important. Just think about it, if your ServiceTool If it breaks down, how long will it take you to restore it to normal work, and how long will your users be able to tolerate the importance of Dual Servers.

In addition, raid and tape backup are also very necessary. For raid, the system reliability can be greatly improved at a low cost, and its complexity is far lower than that of Dual-host systems. After all, hard disks are the most frequently operated and vulnerable components in the system. If raid is used, the faulty system can be easily repaired, it also reduces the number of server downtime switchover times.

Data backup is an essential measure. Because raid and dual-host backup are both real-time backups. Any software errors, viruses, and misoperations will be affected in multiple copies of data synchronously. Therefore, data must be backed up (no matter what media is used, it is recommended that you have at least one offline backup) so that data can be restored when data is damaged or lost.