58 p5-550 Technical Overview and Introduction Allows for FTP, HTTP, or secure HTTPS transfers. Provides the same requisite checking as the IBM fix distribution Web site. Available through SMIT menus (smitty suma) or a command line interface.3.4 Cluster 1600Today's IT infrastructure requires that systems meet increasing demands, while offering theflexibility and manageability to rapidly develop and deploy new services. IBM clusteringhardware and software provide the server, with availability, scalability, security, andsingle-point-of-management control, to satisfy these needs.IBM Sserver Cluster 1600 is a POWER-based AIX 5L and Linux Cluster targeting scientificand technical computing, large-scale databases, and workload consolidationIBM Cluster Systems Management (CSM) is designed to provide a robust, powerful, andcentralized way to manage a large number of POWER5-based systems all from one singlepoint of control. CSM can help lower the overall cost of IT ownership by helping to simplify thetasks of installing, operating, and maintaining clusters of servers. CSM can provide oneconsistent interface for managing both AIX and Linux nodes (physical systems or logicalpartitions), with capabilities for remote parallel network install, remote hardware control, anddistributed command execution.The p5-550 is supported with the Cluster 1600 running CSM for AIX, V1.3.1. To attach ap5-550 to a Cluster 1600, an HMC is required. One HMC can also control several p5-550sthat are part of the cluster. If a p5-550 configured in partition mode (with physical or virtualresources) is part of the cluster, all partitions must be part of the cluster.It is not possible to use selected partitions as part of the cluster and use others for non-clusteruse. The HMC uses a dedicated connection to the p5-550 to provide the functions needed tocontrol the server, such as powering the system on and off. The HMC must have an Ethernetconnection to the Control Work Station (CWS). Each partition in p5-550 must have anEthernet adapter to connect to the CWS trusted LAN.Information regarding HMC control, cluster building block servers, and cluster softwareavailable at:http://www.ibm.com/servers/eserver/clusters/The benefits of a clustered environment based on logical partitionsThe evolution of processor and storage technologies has a great impact on the architecture ofIT infrastructures. This was the most significant challenge for the infrastructure in the pastand will also be in the future. During the first half of the 1990s, one single central instance ofan application per node was suitable, moreover, most productive systems neededadditionally associated nodes, so-called application servers.Increasing performance and reliability by simply replicating application server nodes led tocomplex environments that often resulted in poor system management. The reason for thesecomplex constructions was the limited computing power of a single node. This limitation wassoftened during the second half of the 1990s.Big symmetric multiprocessor (SMP) nodes with higher clock rates and increased memoryprovided the possibility to install more than one system on a node. This had some side effectsregarding systems operations: Release planning processes had to pay attention to differentdatabases or application versions, or both, to avoid unresolved conflicts.