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FusionServer G5500 Server G560 V5 Compute Node Maintenance and Service Guide 03

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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).



artificial intelligence (AI)

A method of interaction between a machine and a surrounding world. The machine simulates human intelligence to impersonate human behavior or execute tasks like people.


A circuit board inserted in the extended slot of the computer, providing extra functions for the computer. The universal adapter used in the personal computer includes video adapter, memory add-on board, internal modem, and audio card.



An electronic circuit board containing circuits and sockets into which additional electronic devices on other circuit boards or cards can be plugged.

baseboard management controller (BMC)

BMC is the core of the IPMI standard, responsible for collecting, processing, and storing sensor signals, and monitoring the running status of each component. The BMC provides the hardware status and alarm information of the managed object for the chassis management module. Therefore, the MM can manage this device.


BMC stands for baseboard management controller. The BMC is a management module that complies with the Intelligent Platform Management Interface (IPMI) standard, collects, processes, and stores sensor signals, and monitors the operating status of each component. The BMC provides the hardware status and alarm information about the managed objects for the management module, so that the management module can manage the objects.



Free-standing and self-supporting enclosure for housing electrical and/or electronic equipment. It is usually fitted with doors and/or side panels which may or may not be removable.


A physical entity that consists of the sub-rack, slot, backplane, cooling device, and power supply device. Components are placed and interconnected in the chassis. The chassis protects the components against pollution and damage.

convolutional neural network (CNN)

A feed-forward neural network consisting of one or more convolutional layers and fully-connected layers on the top and delivering outstanding performance in processing large images.

compute unified device architecture (CUDA)

A parallel computing platform and application programming interface (API) model created by NVIDIA. This architecture enables graphical processing units (GPUs) to resolve complex calculation problems. It consists of the instruction set architecture (ISA) and GPU parallel computing engine.


A wooden lid of a package used to pack a cabinet.

critical alarm

An alarm of relatively high level. When a critical fault defined by the system occurs in the managed device, a critical alarm is generated, for which a threshold can be set.


data module (DM)

A module recording chassis asset information (such as the chassis name, bar code, manufacturer, and production date), slots, and E-Keying.

deep learning

A subset of machine learning. Deep learning uses a large amount of data and computing capabilities to simulate deep neural networks, including the deep neural network (DNN), convolutional neural network (CNN), and recurrent neural network (RNN). There are two stages, training and reasoning.


The process of detecting and eliminating mistakes in computer programs or other software.


ejector lever

An item or part used to insert or extract devices in and out of subracks.

electromagnetic shielding (EMS)

The process of limiting the coupling of an electromagnetic field between two locations. Typically, it is applied to enclosures, separating electrical circuits from external surroundings, and to cables, separating internal wires from the surroundings that the cable passes through.

ESD grounding

The protection measure of grounding devices and people to prevent static electricity from damaging the devices or people.

ESD wrist strap

Used to prevent the ElectroStatic Discharge (ESD) when you touch or operate a device or component.


field replaceable unit (FRU)

A module or component which will typically be replaced in its entirety as part of a field service repair operation. Any entity that can be replaced by a user in the field. Not all FRUs are hot swappable. At its most basic, the FRU does not have an IPM controller on the assembly and, hence, is not directly controllable through the IPMI infrastructure. Basic product inventory data for the FRU may be maintained at a proxy IPM Controller elsewhere in the Chassis. Examples of this type of FRU might include: backplane (the chassis housing, for all practical purposes), power supply module, fan module, server blade, switch module, management module, data module.

file system

A system for organizing directories and files in the storage device, such as creating, deleting, renaming files and directories, in addition to displaying files. The file system can delete a file, recover the deleted file, clear the files in the recycle bin, display the information in a file, rename a file, copy a file, remove a file, and display the information of the specified file.

File Transfer Protocol (FTP)

The TCP/IP standard protocol, used to download files from a computer or upload files to another one by using TCP.

flash memory

A type of memory device that remembers all its data even when the power is turned off. In addition, the data can be erased and rewritten under software control.

floating nut

It has a range of uses but are more commonly used in the hobby for engine fixing (securing engine mounts to the firewall), wing fixings, and undercarriage fixing.


general-purpose computing on graphics processing units (GPGPU)

The use of graphics processing units (GPUs) for general-purpose scientific and engineering computing. GPGPU features powerful floating-point computing capabilities and parallel processing capabilities. Its performance in image processing, high performance computing (HPC), and AI is much higher than that of general-purpose CPUs.

gigabit Ethernet (GE)

A collection of technologies for transmitting Ethernet frames at a rate of a gigabit per second, as defined by the IEEE 802.3z standard. GE is compatible with 10 Mbit/s and 100 Mbit/s Ethernet.


A technology that enables GPUs within a single computer or GPUs in different servers located across a network, to directly exchange data without needing to go to CPUs or system memory, improving performance and reducing latency.

guide rail

Provides for the device guidance feature in a slot.

ground wire

The ground wire and a fuse or breaker are the standard safety devices used with standard electric circuits. A power socket leads out three wire holes, for live wire, neutral wire, and ground wire.


health check

Through load balancing, the LBD distributes requests to different servers. This reduces the burden on a single server. However, a server may fail to respond to any request if it breaks down. To enhance security and reliability of the system, health check function is required. Health check means that the system checks the servers timely. If the system detects that a server broke down or failed to provide a service, it removes the server from the server group and sends requests to healthy servers.

heterogeneous computing

Systems that use computing units of different instruction sets and system architectures to maximize performance or energy efficiency. Common heterogeneous computing units include central processing units (CPUs), graphics processing units (GPUs), field-programmable gate arrays (FPGAs), and digital signal processors (DSPs).


A computer that allows multiple users in the network to access at the same time.

hot swap

In a running system, inserting or removing a server blade does not affect normal running of the system.


intelligent baseboard management controller (iBMC)

Huawei's proprietary intelligent server management system that uses multiple innovative technologies to provide comprehensive refined management functions for servers. iBMC supports multiple industry standard protocols such as IPMI, SNMP, and Redfish, and implements reliability, availability, and serviceability management for server hardware.

IP address

A 32-bit (4-byte) binary number that uniquely identifies a host (computer) connected to the Internet for communication with other hosts in the Internet by transferring packets. An IP address is expressed in dotted decimal notation, consisting of the decimal values of its 4 bytes, separated with periods; for example, The first three bytes of the IP address identify the network to which the host is connected, and the last byte identify the host itself.



Optical fiber cable that has connectors installed on both ends. Two connectors can be conveniently shorted together by a cap.



A switcher that provides public video, keyboard and mouse for all server blades.


long short-term memory (LSTM)

A specific recurrent neural network that is applicable to the processing and prediction of important events with relatively long intervals and delays in the time sequence. LSTM is mainly applied in the field of semantic identification at present.

live wire

The wire connected to the energizer live terminal. The live wire must be insulated to conduct the pulse down the fence. A power socket leads out three wire holes, for live wire, neutral wire, and ground wire.


machine learning

A branch of artificial intelligence. It emphasizes learning rather than computer programming. Machine learning is mainly used to design and analyze some algorithms that can be automatically learned by computers.

major alarm

An alarm of relatively middle level. When a major fault defined by the system occurs in the managed device, a major alarm is generated, for which a threshold can be set.

mezzanine card

A card connected to the mainboard through the connector, level to the mainboard. It is used on a device which has high requirement on space.

minor alarm

An alarm of relatively low level. When a minor fault defined by the system occurs in the managed device, a minor alarm is generated, for which a threshold can be set.


natural-language processing (NLP)

An area of computer science and artificial intelligence concerned with the interactions between computers and human (natural) languages, and is a science integrating linguistics, computer science, mathematics.

network cable

The Ethernet cables used by the current products include standard network cables and straight-through cables. In the aspect of network connection, the network cables are divided into two types: straight-through cables and crossover cables.

network port

Numbers which are recognized by Internet and other network protocols, enabling the computer to interact with others.

neutral wire

A grounded conductor that carries electrical current back to the source from an electrical device. A power socket leads out three wire holes, for live wire, neutral wire, and ground wire.


optical port

A component that connects several transmit or receive units.

open computing language (OpenCL)

The first open and free standard for parallel programming of heterogeneous systems. OpenCL executes across heterogeneous platforms consisting of central processing units (CPUs), graphics processing units (GPUs), digital signal processors (DSPs), field-programmable gate arrays (FPGAs) and other processors or hardware accelerators, providing a unified programming environment. OpenCL, initially developed by Apple Inc., specifies programming languages for programming kernels and is a group of application programming interfaces (APIs) to define and control platforms.



A front-most element of a server device, perpendicular to the PCB, that serves to mount connectors, ejector lever, indicators, controls and mezzanines, and also seals the front of the chassis for airflow and EMC.

peer-to-peer (P2P)

A network technology and network topology structure that peer nodes are equally privileged and communicate with each other.


A short form of PCI Express. It is a new bus standard, which can replace PCI and AGP interface specifications. Through the point-to-point and bi-directional interconnection technology, PCI or AGP parallel data transmission is changed into serial data transmission. Using this standard, the data transmission speed between devices can be improved greatly.


Physical socket on the panel.

power supply module

Module that provides power supply to operate other boards or modules.

protection grounding

The protection measure of grounding the electrical devices in case that the damaged insulation layer of the device causes hurt to people due to the live cover or other metal parts.



A storage technology that combines multiple independent physical hard disks into a logical disk (disk group) in several ways, which are called redundant array of independent disks (RAID) levels, to provide higher storage and redundancy performance than a single hard disk.

recurrent neural network (RNN)

A class of artificial neural network where connections between units form a directed graph along a sequence. RNNs can use their internal memory to process sequences of inputs. This makes them applicable to tasks such as unsegmented handwriting recognition or speech recognition.


The ability of a system to keep functioning normally in the event of a device failure, by automatically having a backup device replace the faulty one.

redundant array of independent disks (RAID)

A data storage scheme that allows data to be stored and replicated in a hardware disk group (logical hard disk) consisting of multiple hard disks (physical hard disks). When multiple physical disks are set up to use the RAID technique, they are said to be in a RAID array. The hard disks in a RAID array provide higher data reliability and input/output performance. There are various defined levels of RAID, each offering differing trade-offs among access speed, reliability, and cost. At present, there are seven basic RAID levels from RAID 0 to RAID 6. These basic RAID levels can be further combined to form new RAID levels, such as RAID 10 (a combination of RAID 0 and RAID 1).

remote direct memory access (RDMA)

A technology designed to resolve data processing latency on servers during network transmission. RDMA directly transfers data to the storage of a computer through the network and quickly moves data from a system to the remote system storage without copying data between memory of CPUs, reducing the overhead and delay the CPUs.

RDMA over Converged Ethernet (RoCE)

A network protocol that allows remote direct memory access (RDMA) over an Ethernet network. There are two RoCE versions, RoCE v1 and RoCE v2. RoCE v1 supports Layer 2 networks and RoCE v2 supports Layer 3 networks.


serial port

An input/output location (channel) that sends and receives data to and from a computer's CPU or a communications device one bit at a time. Serial ports are used for serial data communication and as interfaces with some peripheral devices, such as mice and printers.


A special computer providing services for clients in the network environment.

Simple Mail Transfer Protocol (SMTP)

The TCP/IP standard protocol used for transferring electronic mail messages from one machine to another. SMTP specifies how two mail systems interact and the format of control messages they exchange to transfer mail.

Simple Network Management Protocol (SNMP)

The network management protocol of TCP/IP. SNMP is a protocol that allows management information about an object to be transmitted between any two SNMP management stations and provides a means to monitor and control network devices, and to manage configurations, statistics collection, performance, and security. SNMP is realized based on User Datagram Protocol (UDP), the transmission layer protocol, and can be divided into two parts, NMS and Agent.


The receptacle part of a connector, which receives a plug.

solid state drive

A solid state drive (SSD) consists of a control unit and a storage unit (flash chip). Simply, it is a drive made up of a solid state electronic storage chip array. The interface specifications, definition, functions, and usage of an SSD are the same as those of a common hard drive.



Standard terminal emulation protocol in the TCP/IP protocol stack. Telnet is used for remote terminal connection, enabling users to log in to remote systems and use resources as if they were connected to a local system. Telnet is defined in RFC 854.


A device with a keyboard and video display but no disk drive, which is connected to other devices through serial ports.



Unit of vertical height defined in IEC 60297-1 rack, chassis, and subrack height increments. 1U = 44.45 mm = 1.75 inch.

user interface (UI)

A configuration interface parallel to the interface view, which is provided by a server blade and is used to configure and manage all physical interfaces and logical interfaces in asynchronous and interactive mode. The purpose is to manage various user configurations together.



A protection mechanism that allows important data to be read but not deleted, altered, or overwritten.

Updated: 2018-12-14

Document ID: EDOC1100031432

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