Hardware Terms

• BMC: Baseboard management controller, the microcontroller that manages the motherboard.
• BIOS: Basic input/output system, the firmware that initializes the motherboard and runtime services on startup.
• HBA: Host Bus Adapter, a device that manages communication between storage media and other system components.
• SATA DOM: SATA disk on a module, the hypervisor boot drive for Nutanix platforms up to and including G5.
• M.2: mSATA 2, the hypervisor boot drive for Nutanix platforms G6 and later.

Dell-Specific Terms

• iDRAC: Integrated Dell remote access controller, a software tool that lets you administer a server without needing physical access.
• iSM: iDRAC service module, a module that integrates iDRAC with an operating system.
• PTAgent: Power Tools agent, the software entity responsible for configuring the iSM.
• Firmware Entities: A collective term for all Dell firmware not related to iDRAC.

Lenovo-Specific Terms

• IMM2: Integrated management module 2, a service processor that manages the motherboard and allows remote access for server administration. Present on Lenovo generation-5 platforms; replaced by XCC in later generations.
• UEFI: Unified extensible firmware interface, the software entity that initializes the motherboard and runtime services on startup. A replacement for the BIOS.
• XCC: XClarity controller, a service processor that manages the motherboard and allows remote access for server administration. Present on Lenovo platforms that use the Intel "Purley" motherboard, replacing the IMM2 from earlier generations.