IBM i Series, Handbook

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Operating System/400 (5722-SS1)
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Operating System/400 (5722-SS1)
iSeries clusters support up to 128 nodes. Any combination of the existing OptiConnect WAN
and LAN connectivity options can be used to build the cluster. These options include:
• OptiConnect hardware, fully supported as an orderable system feature, is an attractive
connectivity method for high-end and mid-range models.
• ATM provides a high-performance connection to remote systems in the cluster.
• Ethernet and token-ring LANs are ideal for connecting low-end iSeries models into the
cluster.
All systems are managed from a single workstation containing the high-availability business
partner cluster management application. Install OS/400 V4R4 or higher on each node in the
cluster.
Cluster Resource Services – New with V5R1
Additional significant functions are provided with V5R1 that allow even more flexibility and
improved availability. Capabilities include:
• Independent Auxiliary Storage Pools (iASPs) allow you to take data offline and
bring data online independent of the System ASP and other User ASPs.
– System services in support of Option 41, HA Switchable Resources, allows the use of
resilient device cluster resource groups containing Independent ASPs.
– IBM Cluster Management Utility allows you to create and manage a simple two-node,
switched disk cluster.
– HSL OptiConnect is supported as a cluster communications fabric.
– Options to adjust the tuning and configuration parameters of your cluster to better
match your communications environment.
– Journaling of IFS objects, data areas and data queues, and options to reduce the
amount of data journaled.
• High Availability Switchable Resources, OS/400 (option 41), a chargeable option
of OS/400, provides the capability to achieve a highly available environment using
switchable resources. The resources are physically switched between systems so that
only one copy of the resource is required.
GUI Management and Administration
Performance Collection and Evaluation
Users can manually collect system performance data for a single time period or automatically
collect data on a weekly schedule using a set of commands/menus. This systems
management function provides data to assist the user in workload scheduling, system tuning,