Overview

This chapter contains the following topics:

Overview

The Cisco UCS C845A M8 Rack Server (server) is a dense GPU hardware platform for robust compute and generative artificial intelligence (GAI) workloads. The server is a highly scalable 2 to 8 GPU MGX Server designed to drive a multipled of AI workloads such as, AI training and inferecing, high performance computing, Data Analytics, Visualization and HyperScale Cloud applications, large language models (LLMs), design and simulation.

With powerful GPU and CPU compute, the server handles north-south and east-west traffic loads efficiently for the service provider, healthcare and life sciences, financial services, automotive, and manufacturing sectors, as well as others.

NVIDIA® H100 SXM or NVIDIA® H200 Server PCI Express Module (SXM) GPUs. SXM is a socket-based GPU interconnect method used by NVIDIA GPUs.
AMD MI300X OCP Accelerator Model (OAM) GPUs. OAM is an Open Compute GPU interconnect standard that avoids GPU vendor lock in.

For north-south traffic, the server supports up to two NVIDIA Bluefield-3 B3220 DPUs or up to two NVIDIA ConnectX-7 NICs

For east-west traffic, up to Eight NVIDIA ConnectX-7s or Bluefield-3 B3140H SuperNICs are supported for GPUs enabling AI model training across a cluster of dense-GPU servers.

The server is offered in fixed configurations with resources optimized for intensive AI and HPC workloads.

External Features

The server contains modular groups of components that are arranged into the following trays.

Fan and Storage Locations
Redundant PSU Locations

Fan and Storage Locations

The server contains 5 fans for proper cooling as well as four groups of ES.1 NVMe SSDs for storage.


Item	Description
1	Four PCIe 5 ES.1 NVMe cages
2	Five 80x80 Fans

Redundant PSU Locations

The system includes eight power supply units (PSU) configured for 12V CRPS 1+1 & 54V PSU 4+2 redundancy.

Note

For 12V CRPS 1+1

If one PSU fails, troubleshoot the cause and replace the failing PSU immediately. If a PSU fails the system keeps running at full performance.


Item	Description
1	12V Redundant PSU Locations

Component Locations

The server is designed as a modular system with subsystems for compute, cooling, and so on. Subsystems are generally arranged in trays, which are field replaceable units (FRUs). However, some components in a subsystem or tray are not individually field-replaceable. The following main components are not field replaceable.

MGX HPM Board
PCIe SW Board
DC-SCM Module
PDB Board
HSC Board
Fan Board
E2.S Backplanes
M.2 Board
FIO Board

For the complete list of FRUs and the procedures to replace them, see Server Components below.

Server Components

The server has the following main components. Some sub components are contained within specific trays in the server. For example, the CPUs, heatsinks, and DIMMs are contained on the CPU tray. If these components need to be replaced, you will order a replacement CPU tray, and replace the entire tray.


Item	Description
1	MGX HPM Board
2	PCIe SW Board
3	DC-SCM Module
4	PDB Board
5	HSC Board
6	Fan Board
7	E2.S Backplanes
8	M.2 Board
9	FIO Board

Server Front Panel

The server has the following hardware features on the front panel.


Item	Description	Root Port
0-4	PCIe5x E1.s NVMe	CPU0 G3 (System storage)
4-8	PCIe5x E1.s NVMe	CPU0 G1 (System storage)
9-12	PCIe5x E1.s NVMe	CPU0 via PCIeSwitch (GPU0-3 data storage)
13-16	PCIe5x E1.s NVMe	CPU0 via PCIeSwitch (GPU4-7 data storage)
17-21	80 x 80 Fan
22	Front Control panel

Front I/O panel

The server has the following features on the front I/O Panel.


Item	Description	Root Port
1	Ambient Sensor	CPU0 G3 (System storage)
2	Mini-Display Port	Display port
3	USB 3.0	USB 3.0 type-A connector
4	USB 3.0	USB 3.0 type-A connector
5	Power Button	Button with Power and Status LED
6	Reset Button	System Reset Button
7	UID Button	Button with unit identification LED

Rear Panel

The server has the following hardware features on the rear panel.


Item	Description	Root Port
1	PCIe5 x16 FHHL	CPU0 (DPU, front-end networking)
2	PCIe5 x16 FHHL	CPU0 via PCIeSwitch1 (ETH0, GPU1, 2 data transferring)
3	PCIe5 x16 FHHL	CPU0 via PCIeSwitch1 (ETH1, GPU3, 4 data transferring)
4	PCIe5 x16 FHHL	CPU1 via PCIeSwitch2 (ETH2, GPU5, 6 data transferring)
5	PCIe5 x16 FHHL	CPU1 via PCIeSwitch2 (ETH3, GPU7, 8 data transferring)
6-9	PCIe5 x16 dual-slot GPU	CPU1 via PCIeSwitch1
10-13	PCIe5 x16 dual-slot GPU	CPU1 via PCIeSwitch2
14	PCIe5 OCP NIC	CPU0 (System networking, optional)
15	DC-SCM Module
16	Power Supply, four

DC-SCM Module

The server DC-SCM Module has the following features


Item	Description	Root Port
1	USB Type-A Port	UART to USB
2	UID Button	Button with unit identification LED
3	Power Button	Button with Power and Status LED
4	USB Type C Port	USB 3.2 Gen1x1 Type C port
5	USB Type A Port	USB 3.2 Gen1x1 Type A port
6	IG LAN Port	BMC Dedicated LAN
7	Mini Display Port	Display Port

MGX HPM Board Components

The server DC-SCM Module has the following features


Item	Description
JCPU0, JCPU1	CPU Socket
DIMM0X	CPU0 DDR5 Slot
DIIM1X	CPU1 DDR5 Slot
PCIe1, PCIe2	CPU0 PCIe Port
PCIe3, PCIe4	CPU0 PCIe Port
PCIe5, PCIe6	CPU0 PCIe Port
PCIe7, PCIe8	CPU0 PCIe Port
PCIe9, PCIe10	CPU1 PCIe Port
PCIe11, PCIe12	CPU1 PCIe Port
PCIe13, PCIe14	CPU1 PCIe Port
PCIe15, PCIe16	CPU1 PCIe Port
PCIe 17, PCIe18	CPU0 PCIe Port
PCIe19, PCIe20	CPU1 PCIe Port
PCIe21	M.2 root port
JBMC	DC-SCI Connector
CNPWR1,2,3,6	12V Input
CNPWR4	12V Standby Input
CNPWR5	NO-POP
CNIOB1	Sidebands
CNBAT	RTC Battery
J2	Clear CMOS
JUSB1	Onboard USB3
CNM2	3.3V output
CNFP2	Sidebands
J4	HDT
CNFPGA1	FPGA JTAG
CNBF3	BF3 NCSI
CNNVS1	For NVSW Board
CNSW1	Sidebands
CNFP1	Sidebands

PCIe SW Board Components


Number	Item	Description
1	Slot 1
2	Slot2
3	Slot3
4	Slot 4
5	Slot 5
6	Slot 6
7	Slot7
8	Slot 8
9	Slot 9
10		3.3V standby input
11		12V input
12		12V input
13		SW0 downstream
14		SW0 downstream
15		CPU1 downstream
16		CPU1 downstream
17		CPU1 downstream
18		CPU1 downstream
19		SW0 downstream
20		SW0 downstream
21		SW0 downstream
22		SW0 downstream
23		SW0 downstream
24		SW0 downstream
25	CNC1P0A
26	CNC1P0B
27	CNC1P2A
28	CNC1P2B
29	CNSSD1A
30	CNSSD1B
31	CN1	Sidebands
32	JTAG1	FPGA JTAG
	JUART	FPGA JUART
	SPI0	FlashROM
	SPI1	FlashROM

HSC Board Components


Number	Item	Description
1	Slot 1	Sidebands
2	Slot2	12V input
3	Slot3	12V input
4	Slot 4
5	Slot 5
6	Slot 6
7	Slot7
8	Slot 8
9	Slot 9
10		3.3V standby input
11		12V input
12		12V input
13		SW0 downstream
14		SW0 downstream
15		CPU1 downstream
16		CPU1 downstream
17		CPU1 downstream
18		CPU1 downstream
19		SW0 downstream
20		SW0 downstream
21		SW0 downstream
22		SW0 downstream
23		SW0 downstream
24		SW0 downstream

Power Distribution Board Components


Number	Item	Description
1	PAD1	12V Power Busbar
2	PAD2	12V Power Busbar
3	PAD3	12V Power Busbar
4	CN6	12V Output
5	CN5	12V Output
6	CN4	12V Output
7	CN3	12V Output
8	CN2	12V Output
9		12V Output
10		Debug
11		12V Output
12		12V Output
13		12V Output
14		12V Output
15		12V Output
16		12V Output
17		12V Output
18		Sidebands
19	CNPWR9	12V Output
20	CNPWR8	12V Output
21	CNPWR7	12V Output

Fan Board Components


Number	Item	Description
1	CNPWR1	12V Input
2	CNPWR2	12V Input
3	CN1	Fan Connector
4	CN2	Fan Connector
5	CN3	Fan Connector
6	CN4	Fan Connector
7	CN5	Fan Connector

DC-SCM Board Components


Number	Item	Description
1	SW2	Reset Button
2	SW1	Power Button
3	SW3	UID Button
4	RJ1	BMD Dedicated 1G NIC
5	SKT1	USB 3.0 Type A
6	DBG1	BMC UART
7	DP1	Mini-Display Port
8	CN303	UART
9	CN301	12V Standby
10	CN302	Sidebands

Front I/O Board Components


Number	Item	Description
1	CN401
2	CN301	PWRs, Sidebands
3	CN302	PWRs, Sidebands
4	CN501	Sensor Connector
5		Mini-Display Port
6		USB 3.0 Type A
7		USB 3.0 Type A
8		UID
9		Reset Button
10		Power Button

PSU Board Components


Number	Item	Description
1	CNPSU4	PSU Connector (not shown, back of illustration)
2	PAD3	12V Power Busbar
3	CNPSU3	PSU Connector (not shown, back of illustration)
4	PAD2	12V Power Busbar
5	CNPSU2	PSU Connector (not shown, back of illustration)
6	PAD3	12V Power Busbar
7	CNPSU1	PSU Connector (not shown, back of illustration)
8	CNPWR2	12V Standby Output
9	CN1	Sidebands
10	CNPWR1	12V Standby Output
11	CN2	Sidebands
12	CNPWR3	12V Standby Output

M.2 Board Components


Number	Item	Description
1	PCIe1	PCIe and Sidebands
2	SKT1	M.2 Connector
3	PCIe1	PCIe and Sidebands

Summary of Features

Table 1. Summary of Features for Cisco UCS C845 A M8 Model Server
Specification	Cisco UCS 845A M8 Model
CPU	Dual AMD® Turing CPUs, up to 400W TDP each. Each CPU supports 3-link XGMII
System Memory	32 DDR5 DIMMs, 5200 MT/s (1 DPC) and 4400 MT/s (2 DPC).
System Control	Dedicated RJ-45 Ethernet port which provides physical access to the server’s baseboard management controller (BMC)
GPU	two, four, six, or eight of the following PCIe GPUs at 60W TDP: NVIDIA GPUs (H100 NVL, H200 NVL and L40S AMD MI210 Intel Gaudi 3
LAN	One OCP 3.0 SFF PCIe Gen5 x8 NIC (CPU0) with two 10GbE RJ-45 Ethernet
Management	Supported through the DC-SCM card, which features an AST2600 BMC Security is offered through a version 3.0 trusted platform module (TPM). One OCP 3.0 10GBaseT module offers server host management.
Storage	Up to 20 E1.S NVMe PCIe Gen5 SSDs. Optionally, the server can be configured with up to four additional E2/s NVMe drives. A Cisco Boot-Optimized RAID controller with 2 M.2 SATA boot drives is also supported.
Expansion Slot	Eight FHFL Dual-slot PCIe Gen5 x16 slots Four FHHL PCIe Gen5 x16 slots One HHHL PCIe Gen5 x16 slot
Networking	Five PCIe x16 full height, half length (FHHL) slots for single-slot NICS or data processing units (DPUs) NVIDIA BlueField 3 SuperNICs for north-south traffic Mellanox ConnectX 7 (CX-7) or Bluefield 3 single-slot NICs for east-west traffic.
System Cooling	Five individual 80 mm fans
Power	80Plus 12V M-CRPS hot-swappable redundant PSUs with N+1 Redundancy.
System BIOS	AMI® BIOS
System Software	AMD ROCm™ Software Ubuntu / Red Hat Enterprise Linux (operating system)

Cabling Overview

This section provides reference information only to help make informed decisions about cabling the server and hardware options to optimize performance.

Caution

When routing cables, always be sure that the cables are not in a position where they can be pinched or crimped.

HSCB CX71 or CX72 to PDB CN5 or CN4

Table 2. Cabling for HSCB CX71 or CX72 to PDB CN5 or CN4
Description	Part Number	MB Location	SWB Location
MCIO VT/RA to DA CEM	R50.0CB2Y.0001	CX71 CX72	CN5 CN4

HSCB BF3 to MB PCIe7 or PCIe8

Table 3. Cabling for HSCB BF3 to MB PCIe7 or PCIe8
Description	Part Number	HSCB Location	PDB Location
MCIO VT/RA to DA CEM	R50.0CB2V.0001	BF3	PCIe7 PCIe8

HSCB CX7-1 to SWB CNCX71A or CNCX71B

Table 4. Cabling for HSCB CX7-1 to SWB CNCX71A or CNCX71B
Description	Part Number	MB Location	SWB Location
MCIO VT/RA to DA CEM	R50.0CB2W.0001	CX7-1	CNCX71A CNCX71B

HSCB CX7-2 to SWB CNCX72A or CNCX72B

Table 5. Cabling for HSCB CX7-3 to SWB CNCX73A or CNCX73B
Description	Part Number	MB Location	SWB Location
MCIO VT/RA to DA CEM	R50.0CB2Y.0001	CX7-3	CNCX73A CNCX73B

HSCB CX7-3 to SWB CNCX73A or CNCX73B

Table 6. Cabling for HSCB CX7-3 to SWB CNCX73A or CNCX73B
Description	Part Number	MB Location	SWB Location
MCIO VT/RA to DA CEM	R50.0CB2Y.0001	CX7-3	CNCX73A CNCX73B

MB PCIe1 to SWB CNC0P0B

Table 7. Cabling for MB PCIe1 to SWB CNC0P0B
Description	Part Number	MB Location	SWB Location
MCIO VT to MCIO VT	650.05R05.0001	PCIe1	CNC0P0B

MB PCIe2 to SWB CNC0P0A

Table 8. Cabling for MB PCIe2 to SWB CNC0P0A
Description	Part Number	MB Location	SWB Location
MCIO VT to MCIO R/A	650.05R06.0001	PCIe2	CNC0P0A

MB PCIe5 to SWB CNC0P2A

Table 9. Cabling for MB PCIe5 to SWB CNC0P2A
Description	Part Number	MB Location	SWB Location
MCIO VT to MCIO VT	650.05R07.0001	PCIe5	CNC1P0A

MB PCIe9 to SWB CNC0P2B

Table 10. Cabling for MB PCIe9 to SWB CNC0P2B
Description	Part Number	MB Location	SWB Location
MCIO VT to MCIO VT	650.05R09.0001	PCIe9	CNC1P0B

MB PCIe10 to SWB CNC1P0A

Table 11. Cabling for MB PCIe10 to SWB CNC1P0A
Description	Part Number	SB Location	E1.SB Location Location
MCIO VT to MCIO R/A	650.05R0A.0001	PCIe10	CNC1P0A

MB PCIe13 to SWB CNC1P2A

Table 12. Cabling for MB PCIe13 to SWB CNC1P2A
Description	Part Number	SB Location	E1.SB Location Location
MCIO VT to MCIOVT	650.05R0A.0001	PCIe13	CNC1P2A

MB PCIe14 to SWB CNC1P2B

Table 13. Cabling for MB PCIe14 to SWB CNC1P2B
Description	Part Number	SB Location	E1.SB Location Location
MCIO VT to MCIO R/A	650.05R0B.0001	PCIe14	CNC1P2B

SWB CNSSD0A or-CNSSD0B to E1.SB 16-19 CN1-or-CN2

Table 14. Cabling for SWB CNSSD0A or-CNSSD0B to E1.SB 16-19 CN1-or-CN2
Description	Part Number	SB Location	E1.SB Location Location
MCIO VT/RA to MCIO VT	650.05R0D.0001	CNSSD0A CNSSD0B	CN1 CN2

SWB CNSSD1A or CNSSD1B to E1.SB 20-23 CN3 or CN4

Table 15. Cabling for SWB CNSSD1A or CNSSD1B to E1.SB 20-23 CN3 or CN4
Description	Part Number	SB Location	E1.SB Location Location
MCIO VT/RA to MCIO VT	650.05R0D.0001	CNSSD1A	CN3 CN4

MB CNSW1 to SWB CN1

Table 16. Cabling for MB CNSW1 to SWB CN1
Description	Part Number	MB Location	PDB Location
WTB 20pin to WTB 20pin	R50.0CB4W.0001	CNSW1	CN1

MB CNPWR4 to PDB CNPWR11

Table 17. Cabling for MB CNPWR4 to PDB CNPWR11
Description	Part Number	MB Location	SWB Location
WTB 20pin to WTB 20pin	R50.0CB4W.0001	CNSW1	CN1

PDB CNPWR12 to SWB CNPWR3

Table 18. Cabling for PDB CNPWR12 to SWB CNPWR3
Description	Part Number	MB Location	PDB Location
2pin PWR to 2pin PWR	R50.0CB3M.0001	CNPWR12	CNPWR3

MB CNPWR1,2or 3 to PDB CNPWR4, 5 or 6

Table 19. Cabling for MB CNPWR1,2or 3 to PDB CNPWR4, 5 or 6
Description	Part Number	MB Location	PDB Location
8pin PWR to 8pin PWR	R50.0CB3F.0001	CNPWR1 CNPWR2 CNPWR3	CNPWR4 CNPWR5 CNPWR6

MB CNPWR6 to PDB CNPWR7

Table 20. Cabling for MB CNPWR6 to PDB CNPWR7
Description	Part Number	MB Location	PDB Location
8pin PWR to 8pin PWR	650.05R0F.0001	CNPWR6	CNPWR7

MB CNPSU1 to PDF CNMB1

Table 21. Cabling for MB CNPSU1 to PDF CNMB1
Description	Part Number	MB Location	PDB Location
WTB 20pin to WTB 20pin	R50.0CB3M.0001	CNPSU1	CNMB1

PDB CNPWR8 to E.1SB CNPWR1

Table 22. Cabling for PDB CNPWR8 to E.1SB CNPWR1
Description	Part Number	MB Location	PDB Location
12V-2x6 PWR R/A to 12V-2x2 PWR VT	R50.0CB3G.0001	CNPWR8	CNPWR1

PDB CNPWR9 to FANBD_B CNPWR1

Table 23. Cabling for PDB CNPWR9 to FANBD_B CNPWR1
Description	Part Number	MB Location	PDB Location
12V-2x6 PWR R/A to 12V-2x2 PWR VT	R50.0CB31.0001	CNPWR9	CNPWR1

PDB CNPWR10 to FANBD_C CNPWR2

Table 24. Cabling for PDB CNPWR10 to FANBD_C CNPWR2
Description	Part Number	MB Location	PDB Location
12V-2x6 PWR R/A to 12V-2x2 PWR VT	R50.0CB3J.0001	CNPWR10	CNPWR2

MB PCIe17 to E1.SB 8-9 CN1

Table 25. Cabling for MB PCIe17 to E1.SB 8-9 CN1
Description	Part Number	MB Location	PDB Location
MCIO VT x8 to MCIO VT x8	R50.0CB42.0001	PCIe17	CN1

MB PCIe18 to E1.SB 10-11 CN2

Table 26. Cabling for MB PCIe18 to E1.SB 10-11 CN2
Description	Part Number	MB Location	PDB Location
MCIO VT x8 to MCIO VT x8	R50.0CB42.0001	PCIe17	CN1

MB PCIe19 to E1.SB 12-13 CN3

Table 27. Cabling for MB PCIe19 to E1.SB 12-13 CN3
Description	Part Number	MB Location	PDB Location
MCIO VT x8 to MCIO VT x8	R50.0CB44.0001	PCIe19	CN3

MB PCIe20 to E1.SB 14-15 CN4

Table 28. Cabling for MB PCIe20 to E1.SB 14-15 CN4
Description	Part Number	MB Location	PDB Location
MCIO VT x8 to MCIO VT x8	R50.0CB45.0001	PCIe20	CN4

MB PCIe21 to M.2B PCIe1

Table 29. Cabling for MB PCIe21 to M.2B PCIe1
Description	Part Number	MB Location	PDB Location
MCIO VT x8 to MCIO VT x8	R50.0CB6N.0001	PCIe21	PCIe1

MB CNFP2 to FIOB CN302

Table 30. Cabling for MB CNFP2 to FIOB CN302
Description	Part Number	MB Location	PDB Location
Slim SAS 38pin to Slim SAS 38pin	R50.0CB4Z.0001	CNFP2	CN302

MB CNFP1 to FIOB CN301

Table 31. Cabling for MB CNFP1 to FIOB CN301
Description	Part Number	MB Location	PDB Location
WTB 20PIN Side latch to WTB 20pin	R50.0CB6D.0001	CNFP1	CN301

MB JBMC1 to DCSCMB GF

Table 32. Cabling for MB JBMC1 to DCSCMB GF
Description	Part Number	MB Location	PDB Location
MB to DCSCM	R50.0CB3P.0001	JBMC1	GF

PDB CNM2 to M.2B CN1

Table 33. Cabling for PDB CNM2 to M.2B CN1
Description	Part Number	MB Location	PDB Location
2pin to 2pin PWR cable	R50.0CB4J.0001	CNM2	CN1

FIOB Thermal FIO to FIO IO

Table 34. Cabling for FIOB Thermal FIO to FIO IO
Description	Part Number	MB Location	PDB Location
C.A. WIRE PIN 3 CONN 2 L70 HU777	550.0AA02.0001	CN501	IO

HSCB CNFAN1-5 to FAN1-5

Table 35. Cabling for HSCB CNFAN1-5 to FAN1-5
Description	Part Number	MB Location	PDB Location
HSCB to Fan cable	R50.0CB4U.0001	CNFAN1-5	FAN1-5

HSCB CNGPU1 to GPU 1-8

Table 36. Cabling for HSCB CNGPU1 to GPU 1-8
Description	Part Number	MB Location	PDB Location
12V-2x6 PWR VT to 12V-2x2 PWR VT	650.05R0H.0001	CNGPU1	GPU1-8

HSCB CNHIB1 or CNHIB2 to SWB CNPWR1 or CNPWR2

Table 37. Cabling for HSCB CNHIB1 or CNHIB2 to SWB CNPWR1 or CNPWR2
Description	Part Number	MB Location	PDB Location
8pin PWR to 8pin ATX PWR	R50.0CB4P.0001	CNHIB1 CNHIB2	CNPWR1 CNPWR2

PDB CNHSCB1 to HSCB CNSB1

Table 38. Cabling for PDB CNHSCB1 to HSCB CNSB1
Description	Part Number	MB Location	PDB Location
8pin PWR to 8pin ATX PWR	R50.0CB3K.0001	CNBF3	BF3

PDB CNPWR1 to HSCB CNPWR1

Table 39. Cabling for PDB CNPWR1 to HSCB CNPWR1
Description	Part Number	MB Location	PDB Location
Molex Ultrawise PWR cable	R50.0CB34K.0001	CNPWR1	CNPWR1

PDB CNPWR2 to HSCB CNPWR2

Table 40. Cabling for PDB CNPWR2 to HSCB CNPWR2
Description	Part Number	MB Location	PDB Location
Molex Ultrawise PWR cable	R50.0CB32K.0001	CNPWR2	CNPWR2

PDB CNPWR3 to HSCB CNPWR3

Table 41. Cabling for PDB CNPWR3 to HSCB CNPWR3
Description	Part Number	MB Location	PDB Location
Molex Ultrawise PWR cable	R50.0CB3K.0001	CNPF3	CNPF3

MB CNBF3 to HSCB SBMB1

Table 42. Cabling for MB CNBF3 to HSCB SBMB1
Description	Part Number	MB Location	PDB Location
NCSI Cable	R50.0CB3N.0001	CNBF3	SBMB1

HSCB SBBF3 to BF3

Table 43. Cabling for HSCB SBBF3 to BF3
Description	Part Number	MB Location	PDB Location
8pin PWR to 8pin ATX PWR	R50.0CB3K.0001	CNBF3	BF3

HSCB CNBF3 to BF3

Table 44. Cabling for HSCB CNBF3 to BF3
Description	Part Number	MB Location	PDB Location
8pin PWR to 8pin ATX PWR	R50.0CB3K.0001	CNBF3	BF3

Cisco UCS C845A M8 Rack Server Installation and Service Guide

Bias-Free Language

Results

Chapter: Overview

Overview

Overview

External Features

Fan and Storage Locations

Redundant PSU Locations

Component Locations

Server Components

Server Front Panel

Front I/O panel

Rear Panel

DC-SCM Module

MGX HPM Board Components

PCIe SW Board Components

HSC Board Components

Power Distribution Board Components

Fan Board Components

DC-SCM Board Components

Front I/O Board Components

PSU Board Components

M.2 Board Components

Summary of Features

Cabling Overview

HSCB CX71 or CX72 to PDB CN5 or CN4

HSCB BF3 to MB PCIe7 or PCIe8

HSCB CX7-1 to SWB CNCX71A or CNCX71B

HSCB CX7-2 to SWB CNCX72A or CNCX72B

HSCB CX7-3 to SWB CNCX73A or CNCX73B

MB PCIe1 to SWB CNC0P0B

MB PCIe2 to SWB CNC0P0A

MB PCIe5 to SWB CNC0P2A

MB PCIe9 to SWB CNC0P2B

MB PCIe10 to SWB CNC1P0A

MB PCIe13 to SWB CNC1P2A

MB PCIe14 to SWB CNC1P2B

SWB CNSSD0A or-CNSSD0B to E1.SB 16-19 CN1-or-CN2

SWB CNSSD1A or CNSSD1B to E1.SB 20-23 CN3 or CN4

MB CNSW1 to SWB CN1

MB CNPWR4 to PDB CNPWR11

PDB CNPWR12 to SWB CNPWR3

MB CNPWR1,2or 3 to PDB CNPWR4, 5 or 6

MB CNPWR6 to PDB CNPWR7

MB CNPSU1 to PDF CNMB1

PDB CNPWR8 to E.1SB CNPWR1

PDB CNPWR9 to FANBD_B CNPWR1

PDB CNPWR10 to FANBD_C CNPWR2

MB PCIe17 to E1.SB 8-9 CN1

MB PCIe18 to E1.SB 10-11 CN2

MB PCIe19 to E1.SB 12-13 CN3

MB PCIe20 to E1.SB 14-15 CN4

MB PCIe21 to M.2B PCIe1

MB CNFP2 to FIOB CN302

MB CNFP1 to FIOB CN301

MB JBMC1 to DCSCMB GF

PDB CNM2 to M.2B CN1

FIOB Thermal FIO to FIO IO

HSCB CNFAN1-5 to FAN1-5

HSCB CNGPU1 to GPU 1-8

HSCB CNHIB1 or CNHIB2 to SWB CNPWR1 or CNPWR2

PDB CNHSCB1 to HSCB CNSB1

PDB CNPWR1 to HSCB CNPWR1

PDB CNPWR2 to HSCB CNPWR2

PDB CNPWR3 to HSCB CNPWR3

MB CNBF3 to HSCB SBMB1

HSCB SBBF3 to BF3

HSCB CNBF3 to BF3

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