Logical partitioning
You can set up, manage, and troubleshoot AIX® , IBM® i ,
Linux® , and Virtual I/O Server logical partitions by using the Hardware Management Console (HMC ), or
Virtual Partition Manager . By creating logical partitions, you can reduce the
footprint of your data center by consolidating servers, and maximize the use of system resources by
sharing resources across logical partitions.
What's new in Logical partitioning
Read about new or changed information in Logical partitioning since the previous update of this topic collection.
Logical partition overview
Logical partitioning is the ability to make a server run as if it were two or more independent servers. When you logically partition a server, you divide the resources on the server into subsets called logical partitions. You can install software on a logical partition, and the logical partition runs as an independent logical server with the resources that you allocated to the logical partition.
Planning for logical partitions
You can create logical partitions to distribute resources within a single server and make it function as if it were two or more independent servers. Before you create logical partitions, you must assess your current and future needs. You can then use this information to determine the hardware configuration that will meet your current needs and serve as a base for meeting your future needs.
Partitioning with the HMC
The Hardware Management Console (HMC ) is a system that controls managed systems, including the management of logical partitions and use of Capacity Upgrade on Demand. Using service applications, the HMC communicates with managed systems to detect, consolidate, and forward information to IBM for analysis.
Performance considerations for logical partitions
You can manage and enhance the performance of logical partitions so that your system uses its resources in the most efficient manner.
Troubleshooting the RMC connection between the logical partition and the HMC
To perform dynamic partitioning operations, you require a Resource Monitoring and Control (RMC) connection between the logical partition and the Hardware Management Console (HMC ). If you cannot add or remove processors, memory, or I/O devices to or from a logical partition, check whether the RMC connection is active. Failure of the RMC connection is one of the most common reasons for failure of dynamic partitioning operations.