Fusion FusionPoD 700 User manual

FusionPoD 700 Rack-Scale Server
Technical White Paper
Issue
01
Date
2022-02-07
xFusion Digital Technologies Co., Ltd.

2022-02-07
ii
Copyrights © xFusion Digital Technologies Co., Ltd. 2022. All rights reserved.
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In this document, "xFusion" is used to refer to "xFusion Digital Technologies Co., Ltd." for concise
description and easy understanding, which does not mean that "xFusion" may have any other meaning.
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xFusion Digital Technologies Co., Ltd.
Address:
9th Floor, Building 1, Zensun Boya Square, Longzihu Wisdom Island
Zhengdong New District 450046
Zhengzhou, Henan Province
People's Republic of China
Website:
https://www.xfusion.com

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Contents
About This Document.....................................................................................................................v
1 Overview.........................................................................................................................................7
1.1 Product Overview.........................................................................................................................................................7
1.2 Product Features ...........................................................................................................................................................8
2 System Architechture .................................................................................................................10
2.1 Three-Bus Architecture...............................................................................................................................................10
2.2 Heat Dissipation System.............................................................................................................................................11
2.3 Power Supply System.................................................................................................................................................13
2.4 Management System...................................................................................................................................................16
2.5 Networking Solution...................................................................................................................................................17
3 Hardware Description................................................................................................................19
3.1 Cabinet........................................................................................................................................................................20
3.2 Management Module..................................................................................................................................................21
3.2.1 RM210.....................................................................................................................................................................21
3.3 Server Node................................................................................................................................................................22
3.3.1 DH141C V5.............................................................................................................................................................22
3.4 Switching Node ..........................................................................................................................................................23
3.4.1 Out-of Band Management Switching Node.............................................................................................................23
3.4.2 Service Switching Node...........................................................................................................................................23
3.5 Network Interface Card (NIC)....................................................................................................................................24
3.5.1 Ethernet NICs ..........................................................................................................................................................24
3.6 Power Supply..............................................................................................................................................................25
3.6.1 Power Shelf..............................................................................................................................................................25
3.6.2 PSU..........................................................................................................................................................................27
3.6.3 PDU .........................................................................................................................................................................29
3.7 Leakage Detection Modules .......................................................................................................................................32
3.7.1 Photoelectric Leakage Sensor..................................................................................................................................32
3.7.2 Liquid Leakage Detection on the Secondary Loop..................................................................................................33
4 Specifications...............................................................................................................................34
4.1 Technical Specifications .............................................................................................................................................34
4.2 Environmental Specifications.....................................................................................................................................35

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4.3 Physical Specifications ...............................................................................................................................................36
5 Software and Hardware Compatibility ..................................................................................38
6 Safety Instructions ......................................................................................................................39
6.1 Security.......................................................................................................................................................................39
6.2 Maintenance and Warranty .........................................................................................................................................42
A Appendix .....................................................................................................................................43
B Glossary........................................................................................................................................44
C Acronyms and Abbreviations..................................................................................................46

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About This Document
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About This Document
Purpose
This document describes the appearance, functions and structure of a FusionPoD 700 cabinet
server.
Intended Audience
This document is intended for pre-sales engineers.
Symbol Conventions
The symbols that may be found in this document are defined as follows.
Symbol
Description
Indicates a hazard with a high level of risk which, if not
avoided, will result in death or serious injury.
Indicates a hazard with a medium level of risk that, if not
avoided, could result in death or serious injury.
Indicates a hazard with a low level of risk which, if not
avoided, could result in minor or moderate injury.
Indicates a potentially hazardous situation which, if not
avoided, could result in equipment damage, data loss,
performance deterioration, or unanticipated results.
NOTICE is used to address practices not related to personal
injury.
Supplements the important information in the main text.
NOTE is used to address information not related to personal
injury, equipment damage, and environment deterioration.

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Change History
Issue
Release Date
Change Description
01
2022-02-07
This issue is the first official release.

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1 Overview
1.1 Product Overview
1.2 Product Features
1.1 Product Overview
FusionPoD 700 rack-scale server (nameplate FP700, hereinafter referred to as FusionPoD 700)
is a computing cluster server cabinet, which features high density, high performance, high
energy efficiency, high reliability, all-in-one delivery, simplified Operation and Maintenance
(O&M), and lower Total Cost of Ownership (TCO). FusionPoD 700 is applicable to private
cloud customer data centers such as operators, finance, government and enterprises.

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Figure 1-1 Overview of the FusionPoD 700 liquid cooling cabinet
1.2 Product Features
High Density
⚫36 1 U liquid cooling server nodes (DH141C V5), with each supporting two server
mainboards.
⚫The number of configurable server nodes depends on the actual power consumption. The same
cabinet only supports server node configurations of the same model.
⚫For details of supported server nodes, see 3.3 Server Node.
⚫The cabinet comes with guide rails, and the server nodes are installed directly on the guide rails.
High Performance
⚫Liquid cooling, allowing server nodes to run at a higher frequency and providing
powerful computing capabilities.
⚫4 service switching nodes, 1 out-of-band management switching node, and 1+1
redundancy of service switching nodes.
High Energy Efficiency
⚫Mains direct supply.
⚫48 V centralized power supply, up to 97% high power efficiency.

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⚫Liquid cooling for server nodes, supporting up to 45ºC (113°F) water.
⚫Power Usage Effectiveness (PUE) low as 1.2 (without RDHx).
High Reliability
⚫2N power distribution.
⚫PSUs in 11+1 configuration, and a maximum power supply capacity of 33 kW.
⚫N+1 fan modules for server nodes. The maximum operating temperature supported in
case of single fan and single rotor failure is 5ºC (41ºF) below the normal operating
temperature.
⚫The cable backplane has no active components, and the failure rate is 90% lower than
that of the traditional backplane.
⚫The leakage prevention design of server nodes and cabinets supports cabinet and node
liquid leakage monitoring, and can realize self-isolation of the leakage.
⚫The life span of the cabinet components is more than 10 years.
All-in-One Delivery
⚫Transportation of the entire cabinet (including the cabinet, server nodes, switching nodes,
management modules, power shelves, PDUs, PSUs, and sensors) supported, except the
cabinet doors and its accessories.
Simplified O&M
⚫Server node three-bus blind-mating.
⚫Server U space identification with simplified O&M.
⚫RedfishAPIs for integration with third-party NMSs.
⚫FusionDirector intelligent management features.

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2 System Architechture
2.1 Three-BusArchitecture
2.2 Heat Dissipation System
2.3 Power Supply System
2.4 Management System
2.5 Networking Solution
2.1 Three-Bus Architecture
The FusionPoD server node supports three-bus blind-mating. The three buses in the cabinet
are described as follows.
⚫Liquid cooling bus: Manifold water supply and return pipes are respectively connected
with the secondary loop of the equipment room and the server nodes for liquid cooling
cycle.
⚫Backplane bus: Cable signal backplane for signal interconnecting between server nodes
and switching nodes.
⚫Power supply bus: Busbar provides 48 V DC power supply for server nodes.

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Figure 2-1 Three buses of the cabinet
2.2 Heat Dissipation System
Heat Dissipation System of the Equipment Room
FusionPoD 700 is applicable to equipment rooms in various scenarios and liquid-cooled
equipment rooms. The FusionPoD 700 rack-scale server liquid cooling solution of the data
center is shown in Figure 2-2. The CDU drives liquid circulation. Warm water output from the
CDU exchanges heat with the liquid cooling plate of the server node. Heat generated by
high-power components such as CPUs and DIMMs is dissipated by the liquid cooling plate.
The other excessive heat is removed by the in-row air conditioner. Heat dissipation system of
the equipment room consists of the primary side and the secondary side.
⚫The primary side consists of a cooling tower, water pumps, a chiller, and a primary loop.
⚫The secondary side consists of a CDU, a secondary loop, and liquid cooling cabinets.

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Figure 2-2 Heat dissipation system of the equipment room
Table 2-1 Description ofcomponents in the heat dissipation system
Name
Description
Cooling tower
⚫Dissipates the heat from the liquid loops to the exterior.
Generally, it is placed outdoors. The water outlet temperature
varies depending on the local temperature. The water outlet
temperature ranges from 5°C to 35°C (41°F to 95℉).
⚫A closed cooling tower is recommended.
Water pump
Drives the liquid circulation or increases the liquid pressure.
CDU
⚫Implements flow distribution, pressure control, physical isolation,
and condensation prevention for the secondary side. The CDU
implements heat dissipation of the components that use direct
contact liquid cooling (DCLC) in the cabinet. The heat of
high-power CPUs is removed by the liquid cooling plates.
⚫The CDU is installed outside the full liquid cooling cabinet, and
the secondary loop is required.
Liquid cooling
cabinets
Provides liquid cooling for the devices in the cabinet. Heat is
removed from the cabinet by water.
Primary side
Blue arrows indicate the inlet water, and red arrows indicate the
outlet water. The primary side performs the following two actions:
⚫Circulating water between the cooling tower and the CDU.
⚫Circulating water between the cooling tower and the RDHx
through the chiller.
NOTE
Special scenarios refer to the scenarios with restrictions on device
configurations and environment specifications. For details, contact technical
support engineers.
Secondary side
Circulates water between the CDU and the liquid cooling cabinet.
Green arrows indicate the inlet water, and red arrows indicate the
outlet water.

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Heat Dissipation System of the Cabinet
In the cabinet heat dissipation system, high-power components such as processors on servers
and DIMMs are cooled by liquid cooling modules, as shown in Figure 2-3.
Figure 2-3 Heat dissipation system of the cabinet
2.3 Power Supply System
Power Supply System of the Equipment Room
FusionPoD 700 rack-scale servers support the 2N power supply system.
Let's take the utility power input of the equipment room as an example. 2N power supply
system refers to a redundant system composed of two or more sets of power supply systems.
The power supply system of each data center equipment room includes N sets of power
supply systems (called N active), and its total capacity is the basic capacity of the power
supply system of the equipment room. All links and devices in the whole path of the power
supply system (from the power supply input to the dual power supply input load) are
redundancy configured (called N backup), and they are two power supply lines isolated from
each other. During normal operation, each power supply system only bears part of the total
load. The 2N power supply system is shown in Figure 2-4.

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Figure 2-4 2N power supply system
Power Supply System of the Cabinet
FusionPoD 700 rack-scale servers support the 2N power supply system.
FusionPoD 700 rack-scale servers realize joint power supply to the whole cabinet through the
active circuit (N active) and backup circuit (N backup) of the equipment room for active
switching of power supply scenario (such as maintenance and repair) and passive switching of
power supply scenario (such as abnormal power supply at the front level of the equipment
room). The switching mode of power supply is shown in Table 2-2 and Table 2-3. The load
rate of N active or N backup being 100% indicates the power supply source of the current
cabinet. When the load rate of N active and N backup is 0%, all loads of the entire cabinet are
powered off. When the active circuit (N active) and the backup circuit (N backup) are
powered off at the same time, all devices in the cabinet are shut down.
Table 2-2 Active switching of the power supply scenario
Input Status
Active Circuit (N
Active) Load Rate
Backup Circuit (N
Backup) Load Rate
Active circuit (N active) and the
backup circuit (N backup) are normal.
100%
0%
Active circuit (N active) is powered
off, and the backup circuit (N backup)
is normal.
0%
100%
Active circuit (N active) is powered
on, and the backup circuit (N backup)
is normal.
100%
0%
Active circuit (N active) is normal,
and the backup circuit (N backup) is
powered off/on.
100%
0%

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Input Status
Active Circuit (N
Active) Load Rate
Backup Circuit (N
Backup) Load Rate
Active circuit (N active) and the
backup circuit (N backup) are
powered off.
0%
0%
Only the backup circuit (N backup) is
powered on.
0%
100%
Active circuit (N active) is powered
on, and the backup circuit (N backup)
is normal.
100%
0%
Table 2-3 Passive switching of the power supply scenario
Input Status
Active Circuit (N
Active) Load Rate
Backup Circuit (N
Backup) Load Rate
Active circuit (N active) and the
backup circuit (N backup) are normal.
100%
0%
Active circuit (N active) is normal,
and the backup circuit (N backup) is
powered off/on.
100%
0%
Active circuit (N active) is powered
off, and the backup circuit (N backup)
is normal.
0%
0%
The power shelf is in a 3 U form, and installed at the top of the cabinet. 12 PSUs are installed
in 12 power slots, with a maximum of 11+1 redundancy. The management module is installed
in the power shelf, and shares the chassis with PSUs. The power shelf supports dual AC input
and 48 V DC output, and powers server nodes and management modules through the Busbar.
The cabinet is configured with a PDU to power the switching nodes. The PDU is installed
under the power shelf. It provides 380 VAC (1+1) input and output for the power shelf, and
220 VAC (5+5) for the switching nodes.
When the utility power supply is normal, the 48 V DC power supply powers server nodes
through the Busbar. When the utility power is off, all the devices in the cabinet are shut down.

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Figure 2-5 Power supply system architecture
2.4 Management System
The FusionPoD 700 management system includes the management systems for server node
BMC, cabinet, and switching node.
Figure 2-6 Management system architecture

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Server Node BMC Management System
The BMC GE port on the server node panel converges to the out-of band management
switching node through network cables in the cabinet. The out-of band management switching
node is connected to the FusionDirector of the data center management plane through the
uplink interface, and is connected to the cabinet management module RM210 through the
switching node.
Cabinet Management System
The cabinet management module RM210 is connected to the PSU through the CAN bus and
goes up to the FusionDirector of the data center management plane through the switching
node.
FusionPoD 700 rack-scale servers support power capping. After the power capping function is
enabled, when the real-time power of the cabinet reaches the preset power capping threshold,
the iRM management system will control the running frequency of the CPU through the
server node to try to ensure that the power of the cabinet does not exceed the power capping
value, so as to ensure the continuous operation of the service. However, the performance of
the server node may be decreased.
Switching Node Management System
Switching nodes provide management ports for other management systems to be aggregated
to the uplink management switch and connected to the data center management system.
2.5 Networking Solution
FusionPoD 700 cabinet is configured with 36 DH141C V5, with each supporting two server
mainboards. The cabinet networking solution is shown in Figure 2-7.
Figure 2-7 FusionPoD 700 cabinet networking solution

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⚫The backplane provides cable connections to support high-speed signal only, supporting
SERDES at 25GE PAM4 rates.
⚫The four slots from 21 U to 24 U are for switching, with each slot configured with nine 4
x 8-pair straight male connectors.
⚫Balanced switch connector configurations ensure shorter backplane connections.
⚫The server has 36 slots from 1 U to 20 U and 25 U to 40 U, and each slot is configured
with one 4 x 8-pair connector.
⚫Each server node connector supports a maximum of 16 lanes, with each interactive slot
supporting 4 lanes.

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3 Hardware Description
3.1 Cabinet
3.2 Management Module
3.3 Server Node
3.4 Switching Node
3.5 Network Interface Card (NIC)
3.6 Power Supply
3.7 Leakage Detection Modules

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3.1 Cabinet
External Structure
Figure 3-1 External structure
1
Cabinet door
2
Cable chassis
3
Temperature and humidity
sensor
4
Liquid cooling cabinet
5
Rear shelf
6
Management module
7
Cabinet side panel
8
Power shelf
9
PDU
10
Out-of-band management
switching node
11
Server node
12
Service switching node