H3C UniServer R4700 G6 Quick reference guide

i
H3C UniServer R4700 G6
Technology White Paper
Copyright © 2023 New H3C Technologies Co., Ltd. All rights reserved.
No part of this manual may be reproduced or transmitted in any form or by any means without prior written consent of New
H3C Technologies Co., Ltd.
Except for the trademarks of New H3C Technologies Co., Ltd., any trademarks that may be mentioned in this document
are the property of their respective owners.
This document provides generic technical information, some of which might not be applicable to your products.
The information in this document is subject to change without notice.

i
Contents
Overview ························································································3
Product features ························································································································3
High-density computing ········································································································3
Scalability ··························································································································3
Multiple protection mechanisms······························································································4
Server topology ·························································································································4
Server specifications·········································································5
Components ·····························································································································5
Front panel ·······························································································································7
Front panel view of the server ································································································7
LEDs and buttons················································································································8
Ports·································································································································9
Rear panel ····························································································································· 10
Rear panel view ················································································································ 10
LEDs ······························································································································ 10
Ports······························································································································· 11
System board·························································································································· 12
System board components ·································································································· 12
System maintenance switch ································································································ 14
DIMM slots······················································································································· 15
HDDs and SSDs ······················································································································ 15
Drive numbering················································································································ 15
Drive LEDs ······················································································································ 16
Drive backplanes ····················································································································· 17
Front 4LFF SAS/SATA drive backplane·················································································· 17
Front 8SFF UniBay drive backplane ······················································································ 18
Front 2SFF UniBay drive backplane ······················································································ 18
Rear 2SFF UniBay drive backplane······················································································· 19
Riser cards ····························································································································· 19
RC-1HHHL-R3-1U-SW-G6 ·································································································· 19
RC-1HHHL-R4-1U-X16-G5 ································································································· 20
RC-2FHFL-1U-SW-G6 ······································································································· 21
LCD smart management module ································································································· 22
Fan modules··························································································································· 23
B/D/F information····················································································································· 24
Installation guidelines······································································25
Processors ····························································································································· 25
DIMMs··································································································································· 26
SAS/SATA drives····················································································································· 26
NVMe drives ··························································································································· 26
M.2 SSDs······························································································································· 27
Server management module ······································································································ 28
Serial & DSD module ················································································································ 29
PCIe modules ························································································································· 30
Storage controllers ··················································································································· 30
Embedded VROC controllers ······························································································· 31
Standard storage controllers ································································································ 31
Powerfail safeguard modules ······························································································· 31
Installation guidelines ········································································································· 32
NVMe VROC modules ·············································································································· 32
Network adapters····················································································································· 32
GPUs ···································································································································· 33
Power supplies························································································································ 33
Fan modules··························································································································· 33

ii
Product specifications ·····································································34
Technical specifications············································································································· 34
Operating environment requirements ··························································································· 35
Component compatibility··································································36
Processors ····························································································································· 36
DIMMs··································································································································· 36
About DIMMs ··················································································································· 36
DRAM DIMM rank classification label ···················································································· 36
Guidelines ······················································································································· 37
Storage·································································································································· 39
I/O extended modules··············································································································· 40
Supported operating systems and software ··················································································· 40
Intelligent management ···································································41
Maintenance ·················································································43
Certifications ·················································································44

3
Overview
H3C UniServer R4700 G6 servers are 1U rack servers with two Intel Eagle Stream processors,
which can satisfy the requirements of customers for deployment space and economy. The servers
are widely used in general computing scenarios, including databases, virtualization, and cloud
desktops. They are suitable for typical applications in multiple industries such as the Internet,
enterprise, and finance. The servers balance computing performance and scalability and have
better space optimization for simple deployment and management.
Product features
High-density computing
•Supports two Intel®Xeon®scalable processors of the fourth generation.
•Supports up to 120 processor cores.
•Supports up to four single-width GPUs.
Scalability
•Supports up to 32 DDR5 DIMM slots.
•Supports the maximum speed of 4800 MT/s.
•Supports 12 U.2 NVMe SSDs.
•Supports up to 32 E1.S SSDs.
•Supports up to four standard PCIe slots.
•Supports two embedded OCP 3.0 network adapter slots

4
Multiple protection mechanisms
Supports PFR 3.0.
Supports SGX 2.0.
Supports Trusted Platform Module (TCM1.0/TPM2.0).
HDM two-factor authentication.
Support chassis intrusion detection.
Server topology
•The servers support two Intel® Xeon® scalable processors of the fourth generation, four
groups of UPIs, and 32 DDR5 DIMMs.
•The servers use PCIe bus to connect to PCIe riser cards to provide PCIe slots of different
specifications.
•Each processor supports four embedded NVMe module slots. You can use NVMe module
adapters to obtain more slots.
•The servers support dual storage controller links for higher performance.
•The servers support embedded OCP 3.0 network adapters for flexible configuration of PCIe
links.
•The servers use the AST2500 management chip to support management ports such as VGA
connectors and management network ports.
PCH
C741
CPU1
SPR
CPU2
SPR
BMC
AST2600
CH0
CH1
CH2
CH3
CH4
OCP 3.0 PCIe x16
RISER1 PCIe x16
A1
A0
B1
B0
C1
C0
D1
D0
E1
E0
F1
F0
G1
G0
H1
H0
Slimsas x4
DDR4
EMMC
BM C F LAS H 1
SPI/SGPIO
LOCAL BUS
BM C F LAS H 2
PHY
CONN
OCP3.0
PCI e x16
OCP3.0
PCIe x 8
PCH FLASH
SPI0
I2C I3C U AR T PWMTACHADC
JTAG
SPI I2C
PECI
MUX
PECI
JTAG
JTAG
PECI
VT JTAG
FRONT USB3x1
REAR U SB3x2
INNE R USB2x1
iFIST/
DSD CARD
EMM C
MUX
EMM C
USB t o
EMMC
EMMC
EMM C
SPI
SP I T PM2.0
SW
MUX
USB2x1
SPI1
SPI
SPI1
CPLD1
Mast er
CPLD2
Slave
SG PI O
CTL CTL
SPI
SPI
SPI
SERIAL
SERIAL
COM
HDM
MUX
VGA
REAR V GA
FRONT VGA
MCI O X8
MCI O X8
Slimsas x4
Slimsas x4
RISER3 PCIe x16
OCP 3.0 PCIe x8
MCI O X8
MCI O X8
A1
A0
B1
B0
C1
C0
D1
D0
E1
E0
F1
F0
G1
G0
H1
H0
CH5
CH6
CH7
CH0
CH1
CH2
CH3
CH4
CH5
CH6
CH7
DMI x8
SATA X4
SATA X4
SATA X4
USB3x2
USB2x1
RGM I I-1
PCIe5 x8x8
PCIe5 x16
PCIe5 x16 PCIe5 x8x8
PCIe5 x16
PCIe4 x8
EMMC x8
DDR4
NCSI-2
MCIO x8 MCIO x8 MCIO x8 MCIO x8 MCIO x8 MCIO x8
USB3x1

5
Server specifications
Components
Figure 1 Server components
Item
Description
(1) Chassis access panel N/A
(2) Memory
Stores computing data and data exchanged with external storage
temporarily.
(3) System battery Supplies power to the system clock to ensure system time correctness.
(4) Chassis open-alarm module Detects if the access panel is removed. The detection result can be
displayed from the HDM Web interface.
(5) System board
One of the most important parts of a server, on which multiple
components are installed, such as processor, memory, and fan. It is
integrated with basic server components, including the BIOS chip and
PCIe connectors.
(6) Encryption module Provides encryption services for the server to enhance data security.
(7) Supercapacitor holder Secures a supercapacitor in the chassis.
(8) Supercapacitor
Supplies power to the flash card on the powerfail safeguard module,
which enables the storage controller to back up data to the flash card for
protection when power outage occurs.
(9)
SATA M.2 SSD expander
module Provides M.2 SSD slots.
(10) SATA M.2 SSD
Provides data storage space for the server.

6
Item
Description
(11) Riser card Provides PCIe slots.
(12) NVMe VROC module
Works with Intel VMD to provide RAID capability for the server to
virtualize storage resources of NVMe drives.
(13) Power supply Supplies power to the server. The power supplies support hot swapping
and 1+1 redundancy.
(14) Rear drive backplane Provides power and data channels for drives at the server rear.
(15) Storage controller
Provides RAID capability to SAS/SATA drives, including RAID
configuration and RAID scale-
up. It supports online upgrade of the
controller firmware and remote configuration.
(16) Standard PCIe network
adapter Installed in a standard PCIe slot to provide network ports.
(17) Riser card blank Installed on an empty PCIe riser connector to ensure good ventilation.
(18) OCP adapter Provides one slot for installing an OCP network adapter and two slots for
installing drives at the server rear.
(19) Chassis N/A
(20) GPU module Provides computing services such as graphics processing and AI.
(21) Chassis ears
Attach the server to the rack. The right ear is integrated with the front I/O
component, and the left ear is integrated with VGA connector, dedicated
management connector, and USB 3.0 connector.
(22) Drive Provides data storage space. Drives support hot swapping.
(23) LCD smart management
module
Displays basic server
information, operating status, and fault
information. Together with HDM event logs, users can fast locate faulty
components and troubleshoot the server, ensuring server operation.
(24) Drive backplane Provides power and data channels for drives.
(25) Air baffle Provides ventilation aisles for processor heatsinks and memory modules
and provides support for the supercapacitor.
(26) Processor socket cover Installed over an empty processor socket to protect pins in the socket.
(27) Processor heatsink Cools the processor.
(28) Processor
Integrates memory and PCIe controllers to provide data processing
capabilities for the server.
(29) Processor retaining bracket Attaches a processor to the heatsink.
(30) Fan Helps server ventilation. Fans support hot swapping and N+1
redundancy.
(31) Serial & DSD module Provides two SD card slots and forms RAID 1 by default.
(32) Server management
module Provides I/O connectors and HDM out-of-band management features.

7
Front panel
Front panel view of the server
Figure 2 8SFF front panel
Table 1 8SFF front panel description
Item
Description
1 USB 2.0 connector
2
Serial label pull tab
3 2SFF drives or PCIe modules and a riser card on PCIe riser connector 4 (optional)
4 VGA module (supports one VGA connector) (optional)
5 Drives or LCD smart management module (optional)
6 8SFF drives
7 Dedicated management connector
Figure 3 4LFF front panel
Table 2 4LFF front panel description
Item
Description
1 USB 2.0 connector
2 Serial label pull tab
3 ODD blank
4 VGA module (supports one VGA connector)(optional)
5 4LFF drives
6 Dedicated management connector

8
LEDs and buttons
Figure 4 Front panel LEDs and buttons
Table 3 LEDs and buttons on the front panel
Button/LED
Status
Power
on/standby button
and system power LED
•Steady green—The system has started.
•Flashing green (1 Hz)—The system is starting.
•Steady amber—The system is in standby state.
•Off—No power is present. Possible reasons:
No power source is connected.
No power supplies are present.
The installed power supplies are faulty.
The system power cords are not connected correctly.
OCP 3.0
network adapter
Ethernet port LED
•Steady green—A link is present on a port of an OCP 3.0 network
adapter.
•Flashing green (1 Hz)—A port on an OCP 3.0 network adapter is
receiving or sending data.
•
Off
—No link is present on any port of either OCP 3.0 network adapter.
Health LED
•Steady green—The system is operating correctly or a minor alarm is
present.
•Flashing green (4 Hz)—HDM is initializing.
•Flashing amber (1 Hz)—A major alarm is present.
•Flashing red (1 Hz)—A critical alarm is present.
If a system alarm is present, log in to HDM to obtain more information about
the system running status.
UID button LED
•Steady blue—UID LED is activated. The UID LED can be activated by
using the following methods:
Press the UID button LED.
Activate the UID LED from HDM.
•Flashing blue:
1 Hz—
The firmware is being upgraded or the system is being
managed from HDM. Do not power off the server.
4 Hz—HDM is restarting. To restart HDM, press the UID button
LED for eight seconds.
•Off—UID LED is not activated.
Security bezel light
The security bezel provides hardened security and uses effect light to visualize operation and health
status to help inspection and fault location. The default effect light is as shown in Figure 5.

9
Figure 5 Security bezel
Table 4 Security bezel effect light
System status
Light status
Standby Steady white: The system is in standby state.
Startup
•Beads turn on white from middle in turn—POST progress.
•Beads turn on white from middle three times—POST has
finished.
Running
•Breathing white (gradient at 0.2 Hz)—Normal state, indicating
the system load by the percentage of beads turning on from the
middle to the two sides of the security bezel.
No load—Less than 10%.
Light load—10% to 50%.
Middle load—50% to 80%.
Heavy load—More than 80%.
•Breathing white (gradient at 1 Hz )—A pre-alarm is present.
•Flashing amber (1 Hz)—A major alarm is present.
•Flashing red (1 Hz)—A critical alarm is present.
UID
•All beads flash white (1 Hz)—The firmware is being upgraded or
the system is being managed from HDM. Do not power off the
server.
•Some beads flash white (1 Hz)—HDM is restarting.
Ports
Table 5 Ports on the front panel
Port
Type
Description
VGA connector DB-15 Connects a display terminal, such as a monitor or KVM device.
USB connector USB 3.0/2.0
Connects the following devices:
•USB flash drive.
•USB keyboard or mouse.
•USB optical drive for operating system installation.
Dedicated
management
connector
Type-C
Connects a Type-C to USB adapter cable, which connects to a
USB Wi-Fi adapter.
NOTE:
The server supports only Xiaomi USB Wi-Fi adapters.

10
Rear panel
Rear panel view
Figure 6 Rear panel components
Table 6 Rear panel description
Item
Description
1 PCIe riser bay 1: PCIe slots 1 and 2
2 PCIe riser bay 2: PCIe slot 3
3 Power supply 2
4 Power supply 1
5 OCP 3.0 network adapter/DSD module (in slot 6) (optional)
6 VGA connector
7 Two USB 3.0 connectors
8 HDM dedicated network port (1Gbps, RJ-45, default IP address 192.168.1.2/24)
9 OCP 3.0 network adapter (in slot 5) (optional)
LEDs
Figure 7 Rear panel LEDs
(1) UID LED
(2) Link LED of the Ethernet port
(3) Activity LED of the Ethernet port
(4) Power supply LED for power supply 1
(5) Power supply LED for power supply 2
Table 7 LEDs on the rear panel
LED
Status
UID LED
•Steady blue—UID LED is activated. The UID LED can be activated by
using the following methods:
Press the UID button LED.

11
LED
Status

Enable UID LED from HDM.
•Flashing blue:
1 Hz—The firmware is being upgraded
or the system is being
managed from HDM. Do not power off the server.
4 Hz—HDM is restarting. To restart HDM, press the UID button
LED for eight seconds.
•
Off
—UID LED is not activated.
Link LED of the Ethernet
port
•Steady green—A link is present on the port.
•Off—No link is present on the port.
Activity LED of the Ethernet
port
•Flashing green (1 Hz)—The port is receiving or sending data.
•
Off
—The port is not receiving or sending data.
Power supply LED
•Steady green—The power supply is operating correctly.
•Flashing green (1 Hz)—Power is being input correctly but the system
is not powered on.
•Flashing green (0.33 Hz)—The power supply is in standby state and
does not output power.
•Flashing green (2 Hz)—The power supply is updating its firmware.
•Steady amber—Either of the following conditions exists:
The power supply is faulty.
The power supply does not have power input, but another power
supply has correct power input.
•Flashing amber (1 Hz)—An alarm has occurred on the power supply.
•Off—No power supplies have power input, which can be caused by an
incorrect power cord connection or power source shutdown.
Ports
Table 8 Ports on the rear panel
Port
Type
Description
VGA connector DB-15 Connects a display terminal, such as a monitor or
KVM device.
BIOS serial port RJ-45
The BIOS serial port is used for the following
purposes:
•Log in to the server when the remote network
connection to the server has failed.
•Establish a GSM modem or
encryption lock
connection.
USB connector USB 3.0
Connects the following devices:
•USB flash drive.
•USB keyboard or mouse.
•
USB optical drive for operating system
installation.
HDM dedicated
network port RJ-45 Establishes a network connection to manage HDM
from its Web interface.
Power receptacle Standard single-phase Connects the power supply to the power source.

12
System board
System board components
Figure 8 System board components
Table 9 System board components
No.
Description
1 PCIe riser connector 3 (for processor 2)(RISER3 PCIe X16)
2 Fan connector 2 for the OCP 3.0 network adapter
3 OCP 3.0 network adapter slot 2/Serial & DSD module slot (OCP2&DSD&UART CARD)
4 PCIe riser connector 1 (for processor 1)(RISER1 PCIe X16)
5 Server management module slot (BMC)
6 Fan connector 1 for the OCP 3.0 network adapter (OCP1 FAN)
7
OCP 3.0 network adapter slot 1 (OCP1)
8 SlimSAS connector 3 (x4 SATA)(SATA PORT3)
9 SlimSAS connector 2 (x4 SATA)(SATA PORT2)
10 SlimSAS connector 1 (x4 SATA or M.2 SSD)(M.2&SATA PORT1)

13
No.
Description
11 Front I/O connector (RIGHT EAR)
12 M.2 SSD AUX connector (M.2 AUX)
13 Fan module connector 8 (FAN8)
14 LCD smart management module connector (DIAG LCD)
15 MCIO connector C1-P4A (x8 PCIe5.0, for processor 1)(C1-P4A)
16 Fan module connector 7 (FAN7)
17
MCIO connector C1-P4C (x8 PCIe5.0, for processor 1)(C1-P4C)
18 Fan module connector 6 (FAN6)
19 MCIO connector C1-P3C (x8 PCIe5.0, for processor 1)(C1-P3C)
20 Fan module connector 5 (FAN5)
21 MCIO connector C1-P3A (x8 PCIe5.0, for processor 1)(C1-P3A)
22 Front drive backplane power connector 3 (PWR3)
23 Front drive backplane power connector 2 (PWR2)
24
Front drive backplane power connector 1 (PWR1)
25 Fan module connector 4 (FAN4)
26 MCIO connector C2-P4A (x8 PCIe5.0, for processor 2)(C2-P4A)
27 MCIO connector C2-P4C (x8 PCIe5.0, for processor 2)(C2-P4C)
28 Fan module connector 3 (FAN3)
29 Fan module connector 2 (FAN2)
30 Front drive backplane AUX connector 2 (AUX2)
31 Front drive backplane AUX connector 1 (AUX1)
32 Fan module connector 1 (FAN1)
33 Chassis-open alarm module connector (INTRUDER)
34 Front VGA and USB 2.0 connector (LEFT EAR)
35 Rear drive backplane power connector 4 (PWR4)
36 Rear drive backplane power connector 5 (PWR5)
37
MCIO connector C2-P2C ( for processor 2)(C2-P2C)
38 Rear drive backplane AUX connector 5 (AUX5)
39 MCIO connector C2-P2A (for processor 2)(C2-P2A)
40 Riser card AUX connector 8 (AUX8)
41 NVMe VROC module connector (NVMe RAID KEY)
42 Embedded USB 2.0 connector (INTERNAL USB2.0)
43 System battery
44
MCIO connector C1-P2C (for processor 1)(C1-P2C)
45 MCIO connector C1-P2A (for processor 1)(C1-P2A)
X System maintenance switch (MAINTENANCE)
x8 PCIe5.0 description:

14
No.
Description
•PCIe5.0: Fifth-generation signal speed.
•x8: Bus bandwidth.
System maintenance switch
Figure 9 shows the system maintenance switch. Table 10 describes how to use the maintenance
switch.
Figure 9 System maintenance switch
Table 10 System maintenance switch description
Item
Description
Remarks
1
•Off (default)—
HDM login requires the
username and password of a valid HDM
user account.
•On—HDM
login requires the default
username and password.
For security purposes, turn off the switch after
you complete tasks with the default username
and password as a best practice.
5
•Off (default)—Normal server startup.
•On—
Restores the default BIOS
settings.
To restore the default BIOS settings, turn on
and then turn off the switch. The server starts
up with the default BIOS settings at the next
startup.
CAUTION:
The server cannot start up when the switch is
turned on. To avoid service data loss, stop
running services and power off the server
before turning on the switch.
6
•Off (default)—Normal server startup.
•On—
Clears all passwords from the
BIOS at server startup.
If this switch is on, the server will clear all the
passwords at each startup. Make sure you turn
off the switch before the next server startup if
you do not need to clear all the passwords.
2, 3, 4,
7, and 8 Reserved for future use. N/A

15
DIMM slots
The system board and processor mezzanine board each provide eight DIMM channels per
processor, and 16 channels in total, as shown in Figure 10. Each channel contains two DIMM slots.
Figure 10 System board DIMM slot layout
HDDs and SSDs
Drive numbering
The server provides different drive numbering schemes for different drive configurations at the
server front and rear, as shown in Figure 11 through Figure 15.
For the correspondence between the drive numbering of physical drives on the server and the dirve
numbering on HDM or BIOS, see the server user guide.
Figure 11 Drive numbering for front 10SFF drive configurations
Figure 12 Drive numbering for front 8SFF drive configurations

16
Figure 13 Drive numbering for front 4LFF drive configurations
Figure 14 Drive numbering for front 32E1.S drive configurations
Figure 15 Drive numbering for rear 2SFF drive configurations
Drive LEDs
The server supports SAS, SATA, and NVMe drives. You can use the LEDs on a drive to identify its
status.
Figure 16 and Figure 17 shows the location of the LEDs on a drive.
Figure 16 Drive LEDs
(1) Fault/UID LED
(2) Present/Active LED
Figure 17 E1.S drive LEDs
(1) Fault/UID LED
(2) Present/Active LED
To identify the status of a SAS or SATA drive, use Table 11. To identify the status of an NVMe drive,
use Table 12.

17
Table 11 SAS/SATA drive LED description
Fault/UID LED status
Present/Active LED status
Description
Flashing amber (0.5 Hz)
Steady green/Flashing green
(4.0 Hz)
A
drive failure is predicted. As a best
practice, replace the drive before it fails.
Steady amber
Steady green/Flashing green
(4.0 Hz)
The drive is faulty. Replace the drive
immediately.
Steady blue
Steady green/Flashing green
(4.0 Hz)
The drive is operating correctly and is
selected by the RAID controller.
Off Flashing green (4.0 Hz)
The drive is performing a RAID migration or
rebuilding, or the system is reading or
writing data to the drive.
Off Steady green The drive is present but no data is being
read or written to the drive.
Off Off The drive is not securely installed.
Table 12 NVMe drive LED description
Fault/UID LED status
Present/Active LED status
Description
Flashing amber (4 Hz) Off The drive is in hot insertion process.
Steady amber
Steady green/Flashing green
(4.0 Hz)
The drive is faulty. Replace the drive
immediately.
Steady blue
Steady green/Flashing green
(4.0 Hz)
The drive is operating correctly and
selected by the RAID controller.
Off Flashing green (4.0 Hz)
The drive is performing a RAID migration or
rebuilding, or the system is reading or
writing data to the drive.
Off Steady green The drive is present but no data is being
read or written to the drive.
Off Off The drive is not securely installed.
Drive backplanes
The server supports the following types of drive backplanes:
•SAS/SATA drive backplanes—Support only SAS/SATA drives.
•NVMe drive backplanes—Support only NVMe drives.
•UniBay drive backplanes—Support both SAS/SATA and NVMe drives. You must connect
both SAS/SATA and NVMe data cables. The number of supported drives varies by drive
cabling.
Front 4LFF SAS/SATA drive backplane
The PCA-BP-4LFF-1U-G6 4LFF SAS/SATA drive backplane can be installed at the server front to
support four 3.5-inch SAS/SATA drives.

18
Figure 18 4LFF SAS/SATA drive backplane
(1) AUX connector (AUX 1)
(2) Power connector (PWR 1)
(3) x4 Mini-SAS-HD connector (SAS PORT 1)
Front 8SFF UniBay drive backplane
The PCA-BP-8UniBay-1U-G6 8SFF UniBay drive backplane can be installed at the server front to
support eight 2.5-inch SAS/SATA/NVMe drives.
Figure 19 8SFF UniBay drive backplane
(1) AUX connector (AUX1)
(2) MCIO connector A1/A2 (PCIe5.0 x8)(NVMe A1/A2)
(3) Power connector (PWR1)
(4) MCIO connector A3/A4 (PCIe5.0 x8)(NVMe A3/A4)
(5) SAS/SATA connector (SAS PORT)
(6) MCIO connector B1/B2 (PCIe5.0 x8)(NVMe B1/B2)
(7) MCIO connector B3/B4 (PCIe5.0 x8)(NVMe B3/B4)
PCIe5.0 x8 description:
•PCIe5.0: Fifth-generation signal speed.
•
x8
: Bus bandwidth.
Front 2SFF UniBay drive backplane
The HDDCage-2UniBay-1U-G6 UniBay drive backplane can be installed at the server front to
support two 2.5-inch SAS/SATA/NVMe drives.
Figure 20 2SFF UniBay drive backplane
(1) SlimSAS connector A1/A2 (PCIe4.0 x8)(NVME-A1/A2)
(2) x4 Mini-SAS-HD connector (SAS PORT)
(3) AUX connector (AUX)
(4) Power connector (PWR)
PCIe4.0 x8 description:
•PCIe4.0: Fourth-generation signal speed.

19
(1) SlimSAS connector A1/A2 (PCIe4.0 x8)(NVME-A1/A2)
(2) x4 Mini-SAS-HD connector (SAS PORT)
•x8: Bus bandwidth.
Rear 2SFF UniBay drive backplane
The HDDCage-2UniBay-R-1U-G6 drive backplane can be installed at the server front to support
two 3.5-inch SAS/SATA/NVMe drives.
Figure 21 2SFF UniBay drive backplane
(1) SlimSAS connector A1/A2 (PCIe4.0 x8)(NVME-A1/A2)
(2) x4 Mini-SAS-HD connector (SAS PORT)
(3) AUX connector (AUX)
(4) Power connector (PWR)
PCIe4.0 x8 description:
•PCIe4.0: Fourth-generation signal speed.
•x8: Bus bandwidth.
Riser cards
The R4700 G6 supports the following riser card models:
•RC-1HHHL-R3-1U-SW-G6
•RC-1HHHL-R4-1U-X16-G5
•RC-2FHFL-1U-SW-G6
RC-1HHHL-R3-1U-SW-G6
Item
Specifications
PCIe riser connector Connector 3
PCIe slots
Slot 3: PCIe5.0 ×16 (16, 8, 4, 2, 1) for processor 2
NOTE:
The numbers in parentheses represent supported link widths.
Form factors of PCIe modules HHHL
Maximum power supplied per PCIe slot 75 W