powerha systemmirror

Brief introduction Data center and service availability is one of the most important topics in the IT infrastructure and attracts more attention every day. Data replication between sites is a good way to minimize business disruption because the backup restore operation takes too long to meet business requirements, or the device may be corrupted and cannot be used for data recovery, depending on the severity of the disaster. Recovering from the cheapest (recovery takes a long time) to the most e

In a test of the bank user POWERHA for I environment, we noticed an interesting phenomenon that we used to use the green screen to do regular operations. At the same time, there are always customers asking if there is a more intuitive way to build and manage the POWERHA environment. Today we are going to introduce you to the Web application of Powerha for I. Ent

Turn from: http://www.ibm.com/developerworks/cn/aix/library/au-powerhaintro/ Brief introduction As business requirements grow, critical applications must remain available and the system must be tolerant of failures. However, the cost of these fault tolerant systems is high. As a result, these capabilities need to be provided through the application, and the application should also be economical and efficient. A high-availability solution ensures that any component of the solution fails without

nodes, and 212 nodes will not panic, should be able to take over the resource group."Diffuse web (http://www.manxinet.com)"Vi. solving the problem of ha brain crackSummarize:The sequence of the entire process operation:Create HBORAVG----> Create cluster--->add node--->descover---->add network-->add interface---->config Resource--->add resource Group---> Resources loading show/change----> synchronizing clusters to each node----> starting the cluster---- Varyonvg-c HBORAVG boot to enhanced concur

Objective As PowerVM uses more and more, there will be more and more cases of implementing PowerHA in a virtualized environment. Traditional PowerHA6.1 in the physical partition is a more classic configuration, PowerHA7.1 in order to adapt to PowerVM, in the development of the relevant considerations, including three: PowerHA7.1 allow 1 HA nodes only 1 network adapters, 1 Bootip And a serviceip, and Servieip can and Bootip in the same network segment

transparent application scaling to learn more about the comparison between purescale and RAC. Of course, in this book, IBM repeatedly emphasizes that Purescale is derived from the mainframe lineage and deliberately lists some extremely unfavorable scenarios for RAC, although there is a probability size problem, however, in terms of its fundamental implementation principle, Purescale is more advanced than RAC.Purescale also integrates high reliability and transparent application scalability, and

run on all systems that support AIX version 6, however, dynamic partitioning migration is an advanced PowerVM virtualization feature that works only with the system P servers that are based on POWER6 All operating systems, including AIX and power Linux. Workload partition migrations do not need to be configured with virtual devices in both the source and target systems, as is the case with dynamic partitioning migrations, and AIX remains running on both systems and continues to use the resource

the work that has already started will continue, but we will make appropriate improvements or add new ideas, or simply stop developing. Before making a plan, for each new technology, our development team needs to look at its technical field and see if we have enough knowledge and resources to enable it to be implemented in IBM I. We will hold a series of development strategy meetings and invite technical experts from the lab to join with some business architects. During the meeting, the techni

. (There is a joke on xkcd about this situation .) If the problem persists after a change is made, you usually want to cancel it and try other measures. In the first example, this is the case: When I compare the Hardware Management Console profiles of the two servers, they are different. I noticed that the old POWER4 hardware uses a dedicated CPU, while the new POWER6 hardware uses an uncapped shared CPU pool. I want to know how this difference affects CPU performance, so I modified the profile

Preface There are no redundant introductions, but they are simple and purely sharing what is needed in daily life and work. Periodically update stable, reliable, and verified Resources Update record April August 26, 2014-first draft Http://wsgzao.github.io/post/os-list/ Additional reading Ox Software List-http://wsgzao.github.io/post/software-list/ Msdn I tell you-http://msdn.itellyou.cn/ Directory 1234567891011121314151617181920212223242526272829303132333435363738394041424344454

The CRS and database software of RAC have been installed and upgraded to 10.2.0.4. An error cannot be solved. No way onlyReinstall CRS.(Error similar to srvctl add service fails with PROC-5 [ID 466952.1]However, this error occurs when I create a database. The error is reported when the service is added .)However, the previous step took about five hours. If everything is repeated. The cost is too high. I found an IT pub expert onlineDocumentation. Reinstall CRS. Actually succeeded. My library is

functionality, while for highly availableHAthe support and configuration are different. Tomcatof theHAconfiguration needs to be considered:Apacheis to usehttpthe direct agent orAJPAgent? whether to useSticky SessionSticky Sessions? TOMCATEnd is usedmemcached Session ManagerImplementSESSIONof shared storage and access? MSMwhether to useStickyway? and other aspects. In other words, the implementation of high availability without manual intervention (automatic detection of failures, automatic swit