Managing PowerHA
After you have configure an PowerHA® solution, you can
manage that solution by using several interfaces that are related
to high availability.
- Scenarios: Managing high availability solutions
As a system operator or administrator of your high-availability solution, you need to perform common tasks like backup and system maintenance in your high-availability environment. - Managing clusters
Using the PowerHA graphical interface, you can perform many tasks that are associated with the cluster technology that is the basis of your IBM i high availability solution. These tasks help you manage and maintain your cluster. - Managing independent disk pools
In a high-availability environment, it is necessary that the application and its data remain consistent among the nodes that participate in high availability. An independent disk pool, also called an independent auxiliary storage pool (IASP), is a disk pool that contains objects, the directories, or libraries that contain the objects, and other object attributes such as authorization and ownership attributes. An independent disk pool can be used to help in this situation. Ownership of data and applications that are stored in an independent disk pool can be switched to other systems that are defined in the device CRG. PowerHA technology provides high availability during planned and some unplanned outages. - Managing geographic mirroring
Use the following information to help you manage geographic mirroring. Geographic mirroring is a sub-function of cross-site mirroring, where data is mirrored to independent disk pools in anIBM i environment. - Managing Metro Mirror
In PowerHA environment that use IBM System Storage® Metro Mirror technology, you must configure a metro mirroring session between the IBM i systems and the external disk units with Metro Mirror configured. From the system, you can manage these sessions. - Managing Global Mirror
In IBM i high availability environment that use IBM System Storage Global Mirror technology, you must configure a global mirroring session between the IBM i systems and the external disk units with Global Mirror configured. From the system, you can manage these sessions. - Managing switched logical units (LUNs)
Switched logical units are independent disk pools created from logical units created in an IBM System Storage that have been configured as part of a device cluster resource group (CRG). - Managing the FlashCopy technology
FlashCopy® is an IBM System Storage technology that allows you to take a point-in-time copy of external disk units. In PowerHA solutions that use Metro Mirror or Global Mirror, The FlashCopy technology can be used for backup window reduction by taking a copy of data that then can be backed up to media. To use the FlashCopy technology, a session must be created between the system and the external storage units. - Managing DS8000 Full System HyperSwap
DS8000® Full System HyperSwap® is a full system solution that allows logical units that are mirrored between two IBM System Storage DS8000 units to be switched between without an outage, providing a minimal impact high availability solution. - Managing DS8000 HyperSwap with independent auxiliary storage pools (IASPs)
DS8000 HyperSwap with IASPs is typically used with PowerHA LUN switching technology to provide coverage for planned and unplanned storage and server outages, and can also be used with live partition mobility to further minimize downtime for planned server outages.
Parent topic: Implementing high availability