High availability
Whether you need continuous availability for your business applications or are looking to reduce the amount of time it takes to perform daily backups, IBM® i high availability technologies provide the infrastructure and tools to help achieve your goals.
Most IBM i
high availability solutions are built on IBM i
cluster resource services, or more simply clusters. A cluster is
a collection or group of multiple systems that work together as a
single system. Clusters provides the underlying infrastructure that
allows resilient resources, such as data, devices and applications,
to be automatically or manually switched between systems. It provides
failure detection and response, so that in the event of an outage,
cluster resource service responds accordingly, keeping your data safe
and your business operational.
The other key technology in IBM i high availability
is independent disk pools. Independent disk pools are
disk pools that can be brought online or taken offline without any
dependencies on the rest of the storage on a system. When independent
disk pools are a part of a cluster, the data that is stored within
them can be switched to other systems or logical partitions. There
are several different technologies which can use independent disk
pools, including switched disks, Geographic Mirror, Metro Mirror,
and Global Mirror.
IBM PowerHA for i
IBM PowerHA® for i is a licensed program
that provides the following functions:- Cluster Resource Services GUI in the IBM Systems Director Navigator for i, which allows
you to work with clusters and implement high availability using the
task-based approach.
- High Availability Solutions Manager GUI in the IBM Systems Director Navigator for
i, which enables you to set up your high availability solution.
- New commands for working with clusters, cross-site mirroring, and administrative domains.
With the PowerHA product,
you can easily select, set up, and manage your high availability (HA)
solution.