text: **5.1 IBM Power Systems**
  
  Over the years, the IBM Power Systems family grew, matured, was innovated, and pushed the 
  boundaries of what clients expect and demand from the harmony of hardware and software. 
  
  With the advent of the IBM POWER4 processor in 2001, IBM introduced logical partitions 
  (LPARs) outside of their mainframe family to another audience. What was seen as radical 
  then, grew into the expected today. The term*virtualization*is now common-place across 
  most platforms and operating systems. These days, virtualization is the core foundation for 
  cloud computing. 
  
  IBM Power Systems is built for the most demanding, data-intensive, computing on Earth. The 
  servers are cloud-ready and help you unleash insight from your data pipeline: from managing 
  mission-critical data, to managing your operational data stores and data lakes, to delivering 
  the best server for cognitive computing. 
  
  IBM POWER9, the foundation for the number 1 and number 2 supercomputers in the world, is 
  the only processor with state-of-the-art I/O subsystem technology, including next generation 
  NVIDIA NVLink, PCIe Gen4, and IBM OpenCAPI™. 
  
  IBM POWER9 processor-based servers can be found in three product families: Enterprise 
  servers, Scale-out servers, and Accelerated servers. Each of these three families is 
  positioned for different types of client requirements and expectations. 