db2 high availability

Tags: operations will be architected Roo database middleware Data source configuration master-slave min hardware and softwareDatabase High Availability ScenariosLow-read low-write concurrency, low data volume scheme Scenario One: Dual-machine high-availability solutions 1. Database Schema diagram 2. Features A machine

does not fully guarantee the consistency of the data, MMM is suitable for the data consistency requirements are not very high, but also want to maximize the business availability of the scene. For businesses that have a high level of conformance to data, it is highly recommended that you use MMM as a highly available architecture. A description of the MMM

One, the website usability measure 1, the site is not available to measure: The site is not available is also known as a site failure, the industry commonly used how many 9来 to measure the usability of the site. 2. Usability Assessment of website Ii. High Availability Site architecture 1. Application Layer Servers located in the application tier typically respond to

The 2.6.33 Linux? Kernel has introduced a useful new service calledDistributed replicated block Device(Drbd ). this service mirrors an entire block device to another networked host during Run Time, permitting the development of high-availability clusters for block data. lead e the ideas behind the drbd and its implementation in the Linux kernel. The distributed replicated block device (drbd) provides a net

Corosync achieves high availability of MariaDB Database Service Solution: Corosync + pacemaker provides HA solutions. Use the shared file system exported by the NFS Shared Server as the data directory; The topology is as follows: Install LAMP (Apache with MariaDB and PHP) in CentOS/RHEL/Scientific Linux 6) Implementation of MariaDB Proxy read/write splitting MySQL + Corosync + Pacemaker + DRBD build highly

Exchange Server 2010 uses a role-based management model. Multi-Role Server installation and configuration, we have in the previous article has been introduced. In this case, depending on high availability, we need to deploy the server roles on separate servers and achieve high availability of CAs, HT, and MBX roles. At

synchronization. For the business layer on the database, MySQL-based master-slave replication cluster, single-point write master, after the event synchronization to slave, read logic can read from any one slave, in order to read and write the separation of the way, greatly reducing the running load of master, It also improves the utilization of slave resources.For high availability, MySQL replication has a

This article is from DBAnotes. Original article title: DRBD and Pacemaker If someone asks you if a PC server can reach 99.99% high availability, what should you do? Maybe no machine can "Make sure" to achieve this availability. Of course, there may be no problems in a certain period of time, but it must be luck, however, hig