Database Hot Standby how much money

 Network to bring the convenience of our lives, but if the server is connected to the network fails, it may lead to loss of data, so if there is a software for automatic backup data can be safe and effective protection of the data, so We must pay attention to data backup, so as to ensure that the server will not cause disruption in economic losses. Now the software database hotly prepares a lot, we must carefully selected to find the right data backup software to ensure data security. So hot standby database software much money? Let's see Introduction Beijing Rui Yun Information Technology Development Co., Ltd. Hanlin security experts. Use Database Hot equipped with necessary? In general, the servers are working for a long time, for various reasons will cause the server to malfunction. If you simply restart the server, only a few minutes, but if other faults caused long it takes several days. So by hot standby, to avoid prolonged interruption in service, ensure long-term, reliable service. Use hot standby database, not only can reduce server restart time, but also alleviate the workload, because hot standby database software are mostly automated, but also to prevent abnormal error. However, the need to use a database with hot standby, depending on the importance of the system, or whether we can tolerate server outage time, which is a server interruption losses arising to us whether in the acceptable range. How to achieve hot standby database programs? Database Hot with two typical ways are standard shared storage devices, one by software. These two methods are not required guarded, when a failure occurs in the server can be switched automatically and quickly, and there will be no loss of data. Buying storage device database Hot Standby required investment is relatively high, because the database needs to be placed on the storage device. When a server service, read and write directly on the storage device. And when the system is switched to another server also reads data on the storage device. We can through software way, the biggest advantage is that no expensive storage device does not require data storage device can make this machine among multiple hosts free-flowing, but it will also lead to data inconsistencies before, or affect the database read speed. Database Hot Standby application is very wide, using two servers, when one server fails, there is another backup server to take over the interrupted service, to have effective protection for data, so that work unaffected.