46Power Systems Enterprise Servers with PowerVM Virtualization and RAS
Introduced in 2009, Active Memory Sharing (AMS) is an advanced PowerVM memory
virtualization technology that allows multiple partitions in a Power System to share a common
pool of physical memory.
AMS can be used to improve memory utilization in a Power System’s server by reducing the
total assigned memory or by creating more LPARs using the same amount of physical
memory.
AMS allows the administrator to define shared memory pools and to assign LPARs to these
pools. As shown in Figure 2-23, the same Power System server can host both shared and
dedicated memory LPARs.
Figure ...
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