Standalone Logical Partition LPAR


Standalone LPAR is customized method of Logical Partitioning when LPAR is directly connected to Network and Storage adapters. All the Network and Storage I/O operation is performed by direct cabling and not by Virtualization. VIOS task is to perform IO virtualization but in some cases,  it may not require to virtualize the IO. Standalone LPAR is provided with 100 percent bandwidth of storage and network.

Memory and CPU virtualization are done by the Power Hypervisor present in FSP, but IO operation are done by directly connecting the network and storage adapters, we can save the processing power of VIOS in Standalone LPAR as they are not needed here.

The complete processor and memory present in power system can be given to single Standalone LPAR or it may be distributed across some more Standalone LPAR's in Power System. Since we have Standalone LPAR's it does not mean VIOS cannot be created and running. VIOS can be created but not serving the IO operation for this standalone LPAR's.

The IO adapters are assigned dedicated to LPAR and cannot be virtualized. Below block diagram presents the standalone LPAR where complete processor, memory and IO adapters are assigned to one LPAR


standalone lpar

Below block diagram presents a Standalone LPAR having VIOS and those VIOS are virtualized to serve two of its LPAR's

standalone lpar

There may be scenarios when we not needed to run VIOS so we only require stand alone LPAR's, will be saving VIOS processing needs here. Sometimes it may need both to be setup up based on the needs. Or there may be cases we need LPAR's and having managed I/O with the help of VIOS, power systems provides all kinds of processing customization.