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HMC Consoles

An IBM Hardware Management Console (HMC) is a dedicated physical or virtual appliance used to configure, manage, and monitor IBM Power Systems, LinuxONE, and IBM Z mainframes. It enables system administrators to create logical partitions (LPARs), manage system resources, and perform service functions like "call home" for hardware errors. Key details about the IBM HMC include:

Purpose: It manages the service processor of systems to control power, firmware updates, and partition configuration, independent of the operating system.
Components: The HMC consists of a dedicated server (or virtual machine) with preinstalled Licensed Internal Code, accessible via a web browser (HTTPS), command-line interface (SSH), or REST API.
Networking: It uses a private network to communicate with the managed systems' service processors and a public network for user access.
Functionality: It supports virtualization management (PowerVM), Live Partition Mobility (moving running partitions between servers), and Capacity on Demand.
Redundancy: It is best practice to use two HMCs per managed system for high availability.