Operating System/400 (5722-SS1) 481Operating System/400 (5722-SS1)iSeries clusters support up to 128 nodes. Any combination of the existing OptiConnect WANand LAN connectivity options can be used to build the cluster. These options include:• OptiConnect hardware, fully supported as an orderable system feature, is an attractiveconnectivity 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 thecluster.All systems are managed from a single workstation containing the high-availability businesspartner cluster management application. Install OS/400 V4R4 or higher on each node in thecluster.Cluster Resource Services – New with V5R1Additional significant functions are provided with V5R1 that allow even more flexibility andimproved availability. Capabilities include:• Independent Auxiliary Storage Pools (iASPs) allow you to take data offline andbring data online independent of the System ASP and other User ASPs.– System services in support of Option 41, HA Switchable Resources, allows the use ofresilient 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 bettermatch your communications environment.– Journaling of IFS objects, data areas and data queues, and options to reduce theamount of data journaled.• High Availability Switchable Resources, OS/400 (option 41), a chargeable optionof OS/400, provides the capability to achieve a highly available environment usingswitchable resources. The resources are physically switched between systems so thatonly one copy of the resource is required.GUI Management and AdministrationPerformance Collection and EvaluationUsers can manually collect system performance data for a single time period or automaticallycollect data on a weekly schedule using a set of commands/menus. This systemsmanagement function provides data to assist the user in workload scheduling, system tuning,
