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RM245 Series
User Manual
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Chenbro RM245 Series, RM24512, RM24508 User Manual

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Page 1
RM245 Series
Rackmount Chassis User Manual
October 2018 Version 1.0
A d ocum ent provid in g an o ver view of prod uct feat ures, funct ions, archit ecture, and suppor t specif ications
Page 2
DISCLAIMERS
No license (express or implied, by estoppel or otherwise) to any intellectual property rights is granted by this document.
Chenbro disclaims all express and implied warranties, including without limitation, the implied warranties of merchantability, fitness
for a particular purpose, and non-infringement, as well as any warranty arising from course of performance, course of dealing, or
usage in trade.
This document contains information on products, services and/or processes in development. All information provided here is subject
to change without notice. Contact your Chenbro representative to obtain the latest Configuration Guide.
The products and services described may contain defects or errors known as errata which may cause deviations from published
specifications. Current characterized errata are available on request.
Chenbro, and the Chenbro logo are trademarks of Chenbro Micom Co.,Ltd in the worldwide.
*Other names and brands may be claimed as the property of others
© 2018 Chenbro Micom Co.,Ltd.
<Table of Contents │ 2
Page 3

Table of Contents

Table of Contents ............................................................................................................................................... 3
List of Figures ..................................................................................................................................................... 4
List of Tables ....................................................................................................................................................... 6
1. Product Overview .............................................................................................................................. 7
1-1 OS Validation ................................................................................................................................ 8
1-2 System Outlook Overview............................................................................................................ 9
1-3 Front Panel ................................................................................................................................. 11
1-4 Rear Window Overview ............................................................................................................. 12
1-5 Front Control Panel Overview .................................................................................................... 13
1-6 System Dimensions .................................................................................................................... 14
1-7 Available Rack Mounting Kit Options (Refer to “Installation”) .................................................. 15
1-8 System Level Environmental Limits ........................................................................................... 16
1-9 System Packaging ...................................................................................................................... 17
2. Installation ....................................................................................................................................... 18
2-1 Top Cover Installation ................................................................................................................ 19
2-2 HDD Cage Installation ................................................................................................................ 20
2-3 External Hot-swap HDD Tray Instruction ................................................................................... 21
2-4 Internal 2.5’’ HDD Installation ..................................................................................................... 25
2-5 Internal Slim ODD Installation ..................................................................................................... 26
2-6 Rack Handle for System Maintenance ....................................................................................... 27
2-7 Fan Assembly Installation .......................................................................................................... 28
2-8 2 x 2.5” Hot-swap HDD Cage Installation (Rear Window) ......................................................... 32
2-9 PCI-e Card Installation ................................................................................................................ 34
2-10 PSU Installation ........................................................................................................................ 35
2-11 Slide Rail Installation ................................................................................................................ 38
3. Backplane ......................................................................................................................................... 40
3-1 Storage Backplane Optional....................................................................................................... 41
3-2 12G Mini SAS HD 12 Port Active Backplane ............................................................................... 42
3-3 12G Mini SAS HD 12 Port Passive Backplane ............................................................................. 45
3-4 12G Mini SAS HD 8 Port Passive Backplane ............................................................................... 48
3-5 12G 2 x 2.5’’ Hot Swap Drive Bay Accessory Kit ........................................................................ 51
4. Maintenance and Service................................................................................................................. 54
<Table of Contents │ 3
Page 4

List of Figures

Figure 1 RM24508 Outlook Overview .......................................................................................................... 9
Figure 2 RM24512 Outlook Overview .......................................................................................................... 9
Figure 3 RM24508 Major Components Overview ...................................................................................... 10
Figure 4 RM24512 Major Components Overview ...................................................................................... 10
Figure 5 RM24508 3.5’’ Drive Bay-8 ........................................................................................................... 11
Figure 6 RM24512 Drive Bay-12 ................................................................................................................. 11
Figure 7 Rear Window Overview (Single PSU) ............................................................................................ 12
Figure 8 Rear Window Overview (Redundant PSU) .................................................................................... 12
Figure 9 Front Control Panel ....................................................................................................................... 13
Figure 10 Chassis Dimensions ....................................................................................................................... 14
Figure 11 Label Emboss Dimensions ............................................................................................................. 14
Figure 12 Front Top Cover Installation ......................................................................................................... 19
Figure 13 Rear Top Cover Installation ........................................................................................................... 19
Figure 14 RM24508 HDD Cage Installation ................................................................................................... 20
Figure 15 RM24512 HDD Cage Installation ................................................................................................... 20
Figure 16 3.5” Hot-swap HDD Tray Installation ............................................................................................ 21
Figure 17 3.5” Hot-swap HDD Tray Removal ................................................................................................. 21
Figure 18 3.5” HDD Installation .................................................................................................................... 22
Figure 19 2.5’’ Hot-swap HDD Tray Installation ............................................................................................ 23
Figure 20 2.5’’ Hot-swap HDD Tray Removal ................................................................................................ 23
Figure 21 2.5’’ HDD Installation .................................................................................................................... 24
Figure 22 2.5’’ HDD Installation .................................................................................................................... 24
Figure 23 RM24508 Internal 2.5'' HDD Installation ...................................................................................... 25
Figure 24 Internal Slim ODD Installation ....................................................................................................... 26
Figure 25 Rack Handle Location .................................................................................................................... 27
Figure 26 RM24508 Fan Assembly Installation ............................................................................................. 28
Figure 27 RM24508 Fan Holder Installation ................................................................................................. 28
Figure 28 RM24508 Fan Module Installation ................................................................................................ 29
Figure 29 RM24508 Air Baffle Installation .................................................................................................... 29
Figure 30 RM24512 Fan Assembly Installation ............................................................................................. 30
Figure 31 RM24512 Fan Holder Installation ................................................................................................. 30
Figure 32 RM24512 Fan Module Installation ................................................................................................ 31
Figure 33 RM24512 Air Baffle Installation .................................................................................................... 31
Figure 34 2 x 2.5'' HDD Cage Bracket Installation (Rear Window) ................................................................ 32
Figure 35 2 x 2.5'' HDD Cage Installation (Rear Window) ............................................................................. 32
Figure 36 2 x 2.5” HDD Cage Backplane Installation (Rear Window) ........................................................... 33
Figure 37 Rear Window Exchange ................................................................................................................ 34
List of Figures │ 4
Page 5
Figure 38 Riser card and Riser Bracket Installation ....................................................................................... 34
Figure 39 2U Single PSU Installation ............................................................................................................. 35
Figure 40 Redundant PSU Cage Assembly .................................................................................................... 36
Figure 41 Redundant PSU Cage Installation .................................................................................................. 36
Figure 42 CRPS Module Installation .............................................................................................................. 37
Figure 43 CRPS Module Removal .................................................................................................................. 37
Figure 44 Slide rail Installation-1 (384-23803-3300A0) ................................................................................ 38
Figure 45 Slide rail Installation-2 (384-23803-3300A0) ................................................................................ 38
Figure 46 Slide rail Installation-3 (384-23803-3300A0) ................................................................................ 39
Figure 47 Slide rail Installation-4 (384-23803-3300A0) ................................................................................ 39
Figure 48 Drive Tray LED Identification ......................................................................................................... 40
Figure 49 12G Mini SAS HD 12 Port Active Backplane – front view ............................................................. 42
Figure 50 12G Mini SAS HD 12 Port Active Backplane – rear view ............................................................... 43
Figure 51 12G Mini SAS HD 12 Port Passive Backplane – front view ............................................................ 45
Figure 52 12G Mini SAS HD 12 Port Passive Backplane – rear view ............................................................. 46
Figure 53 12G Mini SAS HD 8 Port Passive Backplane – front view .............................................................. 48
Figure 54 12G Mini SAS HD 8 Port Passive Backplane – rear view ............................................................... 49
Figure 55 2 x 2.5'' Rear Mount Backplane Kit Placement ............................................................................. 51
Figure 56 2 x 2.5'' Hot Swap Backplane – front view .................................................................................... 52
Figure 57 2 x 2.5'' Hot Swap Backplane – rear view ..................................................................................... 52
List of Figures │ 5
Page 6

List of Tables

Table 1 Chenbro RM24508/12 Specifications ............................................................................................... 7
Table 2 RM245 Series System Overview ..................................................................................................... 13
Table 3 Slide rail Installation (384-23803-3300A0) ..................................................................................... 15
Table 4 System Environmental Limits Summary ......................................................................................... 16
Table 5 System Packaging .......................................................................................................................... 17
Table 6 RM24508/12 Weight Information .................................................................................................. 17
Table 7 Drive Power LED/Activity LED States .............................................................................................. 40
Table 8 12G Mini SAS HD 12 Port Active Backplane ................................................................................... 42
Table 9 Label Description .............................................................................................................................. 43
Table 10 Dip Switch Setting ........................................................................................................................... 44
Table 11 Fan Setting for RM24512 ................................................................................................................ 44
Table 12 12G Mini SAS HD 12 Port Passive Backplane .................................................................................. 45
Table 13 Label Description-1 ........................................................................................................................... 46
Table 14 MB PWM Connector .......................................................................................................................... 47
Table 15 Dip Switch Setting ........................................................................................................................... 47
Table 16 12G Mini SAS HD 8 Port Passive Backplane .................................................................................... 48
Table 17 Label Description .............................................................................................................................. 49
Table 18 Fan Setting for RM24508 ................................................................................................................ 50
Table 19 12G SAS 2 Port Backplane .............................................................................................................. 51
Table 20 Label Description .............................................................................................................................. 53
List of Tables │ 6
Page 7

1. Product Overview

This chapter provides a high-level overview of the system features and available options. More details for each major sub-system,
feature, or options are provided in the following chapters.
Table 1 Chenbro RM24508/12 Specifications
Feature Description
M/B Form Factor
Dimension
(Dx Wx H)
Drive Bay RM24508: 8x3.5’’ Hot-swap, 2x2.5’’ internal, 1xslim ODD, 2x 2.5” Hot-swap(at rear, optional)
HDD Backplane 12Gb/s active or passive BP, SGPIO, I2C
PSU Form Factor 1+1 Redundant CRPS or 2U single fix
Indicator 1 x Power Status, 2 x LAN Activity, 1xUID, 1 x System status, 1 x HDD Status
Front Control Power On/Off, UID, System Reset
Front I/O
System Security Intrusion switch(option)
Cooling Fans(Max) Middle: Hot-swap 3x 80mm(up to 4), PWM
Expansion Slot 7x Low Profile or 3x Full height
Front Bezel 2U sheet metal bezel
Slide Rail Tool-less
CEB（12’’x10.5’’）/ ATX (12’’x9.6’’)
559mm x 438mm x 87mm
22’’ x 17.2’’ x 3.5’’
RM24512: 12x3.5’’ Hot-swap, 2x 2.5” Hot-swap(at rear, optional)
2xUSB3.0
Fixed 2x 80mm, PWM
Cubic Feet 2.89
Container Loading 20’:260,40’:560,40’H:616
Product Overview │ 7
Page 8

1-1 OS Validation

Basic Installation Testing is performed with each supported operating system. The testing validates that the system can install the
operating system and that the base hardware feature set is functional. A small set of peripherals is used for installation purposes
only.
Performance Testing uses configurations that include in all available slots for a 24-hour, or a 48-hour test run without injecting
errors. Each configuration passes an installation test and Disk Stress test. Any fatal errors or phy error that occur require a complete
test restart.
Stress Testing uses configurations that include in all available slots for about a 8-hour, or High-Low Temperature a 28-hours(low
temp. 12 hours/high temp. 12 hours/increase temp. 2 hours/reduce temp. 2 hours: Total for 28 hours) test run without injecting
errors. Each configuration passes an installation test and a Backplane/Disk Stress test. Any fatal errors or phy error that occur require
a complete test restart.
OS Te chnical Support
T1: Chenbro will provide support for issues involving the installation and/or functionality of a specified operating system as
configured with or without supported adapters and/or peripherals.
T2: Chenbro will provide and test operating system drivers for each of the server board’s integrated controllers, provided that the
controller vendor has a driver available upon request. Vendors will not be required by Chenbro to develop drivers for operating
systems that they do not already support. Chenbro will NOT provide support for issues related to the use of any add-in adapters or
peripherals installed in the server system when an operating system that received only basic installation testing is in use.
T3: Chenbro will not provide technical support for an open source operating system. All questions and issues related to an open
source operating system must be submitted to and supported by the open source community supporting the given operating
system.
Product Overview │ 8
Page 9

1-2 System Outlook Overview

Figure 1 RM24508 Outlook Over vi ew
Figure 2 RM24512 Outlook Overvi ew
Product Overview │ 9
Page 10
Figure 3 RM24508 Major Components Over view
A. Front Top Cover
B. Back Top Cover
C. Label Emboss
Figure 4 RM24512 Major Components Over view
D. Fan Assembly
E. Server Board
F. Power Supply
G. Optical Drive Bay
H. Internal 2.5” HDD bays
I. 2.5” HDD Hot-swap Cage
Product Overview │ 10
Page 11

1-3 Front Panel

Figure 5 RM24508 3.5’’ Drive Bay-8
A. Front Control Panel
B. Storage Drive Bay
Figure 6 RM24512 Drive Bay-12
C. Info Tag
D. Rack Handles
E. Optical Drive Bay
Product Overview │ 11
Page 12

1-4 Rear Window Overview

Figure 7 Rear Window Overview (Single PSU)
A. 2U Single Power Supply
B. CRPS Power Supply
Figure 8 Rear Window Overview (Redundant PSU)
C. I/O Ports
D. Low Profile Expansion Slots
E. Full Height Expansion Slots
F. Optical Drive Bay
Product Overview │ 12
Page 13

1-5 Front Control Panel Overview

Figure 9 Front Control Panel
Table 2 RM245 Series System Overview
Label ICON Overview
A
B
C
D
E
F
G
H
I
Rack Handle (Left)
Rack Handle (Right)
Power Button
UID Button
Reset Button
USB 3.0
HDD Activity LED
System Alarm LED
LAN1,LAN2 Activity LED
Product Overview │ 13
Page 14

1-6 System Dimensions

Figure 10 Chassis Dimensions
Figure 11 Label Emboss Dimensions
Product Overview │ 14
Page 15
Part Number
835/32.9"
599/23.6"
3 Section/2 Section
3 Section
2 Section
26"~33"
Traveling Distance (mm/inch)
782/30.8"
560/22.0"
Loading (kg)
30.8kg
15kg

1-7 Available Rack Mounting Kit Options (Refer to “Installation”)

Advisory Note – Available rack and cabinet mounting kits are not designed to support shipment of the server system while installed
in a rack. If you chose to do so, Chenbro advises you verify your shipping configuration with appropriate shock and vibration testing,
before shipment. Chenbro does not perform shipping tests which cover the complex combination of unique rack offerings and
custom packaging options.
Caution: Exceeding the rail kit’s specified maximum weight limit or misalignment of the server in the rack may result in failure of the
rack rails, resulting in damage to the system or personal injury. Two people or the use of a mechanical assist tool to install and align
the server into the rack is highly recommended.
Available Rack mounting kits:
Table 3 Slide rail Installation (384-23803-3300A0)
384-23803-3300A0
(A5612784)
Rail Dimension (mm/inch)
Applicable Cabinet-post to post (mm/inch) 668~936 / 23.6"~36.9" 660~838 / 26"~33"
Post to Post Distance (mm/inch)
Support chassis width 438
Max. static loading (kg) for UL
Tool-less/Non tool-less Tool-less
Support CMA
668~936 / 23.6"~36.9"
around 100kg
Yes No
84H314610-003
(3A02-599)
660~838 /
438.5
around 60kg
Tool-less
Product Overview │ 15
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Parameter
Limits
*Range may vary, refer to Technical Product Specification*
temperatures from 25° C to 35° C)
Vibration
Operating
5 Hz @ 0.0002 g2/Hz to 350 Hz @ 0.0002 g2/Hz
Random control limit tolerance is ± 3 dB
EMI
Radiated Emissions
International (CISPR 22) Radiated Limits for Radiating Class A & B Devices
200MHz to 1000 MHz / 47 dB ( V/m) and 37 dB ( V/m)
RVI
Operating
HDD class
second) expressed as a percent of Test HDD maximum theoretical
128K Sequential Writes.

1-8 System Level Environmental Limits

The following table defines the system level operating and non-operating environmental limits.
Table 4 System Environmental Limits Summary
Temperature
Humidity
Shock
Pre-scan
Non-Operating -40º C to 70º C (-40º F to 158º F)
Non-Operating
Unpackaged Trapezoidal, 25 g, velocity change is based on Product weight
50% to 90%, non-condensing with a maximum wet bulb of 28° C (at
Input acceleration is 0.26 g RMS 10 minutes per axis for all 3 axes on all samples
Frequency range(MHz)/Class A and Class B(10 meters limits): 30MHz to 300 MHz / 40 dB ( V/m) and 30 dB ( V/m)
Class 1: Highest performance, reliability, and data integrity Class 2: A second tier of performance, reliability, and data integrity
HDD I/O throughput degradation SPEC Pass/Fail Criteria
No functional failure during test or post test diagnostics. Requirement to pass test is based on IOMeter data throughput (in IO’s per
baseline performance
Class1: > 90% of baseline for 4K Random Writes and > 80% of baseline for
128K Sequential Writes.
Class2: > 85% of baseline for 4K Random Writes and > 75% of baseline for
128K Sequential Writes.
Mix: > 80% of baseline for 4K Random Writes and > 70% of baseline for
Product Overview │ 16
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（kg）
(Lbs.)

1-9 System Packaging

The original Chenbro packaging, in which the server system is delivered, is designed to provide protection to a fully configured
system and was tested to meet ISTA (International Safe Transit Association) Test Procedure 1A (2008). The packaging was also
designed to be re-used for shipment after system integration has been completed.
The original packaging includes –the shipping box, and various protective inner packaging components. The box and packaging
components are designed to function together as a protective packaging system. When reused, all of the original packaging material
must be used, including box and each inner packaging component. In addition, all inner packaging components MUST be
re-installed in the proper location to ensure adequate protection of the system for subsequent shipment.
Table 5 Syst em Packaging
Part Number Single/ Bulk Form factor Support level Container Loading Max. static loading (kg)
387-24512-3300A0 Single 730*590*190 L5
NOTE: The design of the inner packaging components does not prevent improper placement within the packaging assembly.
There is only one correct packaging assembly that will allow the package to meet the ISTA (International Safe Transit
Association) Test Procedure 1A (2008) limits.
Failure to follow the specified packaging assembly instructions may result in damage to the system during shipment.
1-9-1 RM24508/12 Weight Information
Table 6 RM24508/12 Weight Information
Product Net Weight（kg） Gross Weight
RM24508 9.5 12 16.5 26.4
RB24512 9.5 12 16.5 26.4
Net Weight (Lb
s.)
Gross Weight
NOTE: An L6 system does not include processors, memory, drives, or add-in cards. It is the system configuration as shipped
from Chenbro. Integrated system weights (System configurations that include the items above) will vary depending on the
final system configuration. For the 1U product, a fully integrated un-packaged system can weigh up to 40 Lbs. (18+ Kg).
Product Overview │ 17
Page 18
2. Installation
RM24508/12 has support for a variety of different storage options, including:
Up to 8 x 3.5” hot swap SAS / SATA HDD or 2.5” SAS/SATA HDD or SSD(RM24508) Up to 12 x 3.5” hot swap SAS / SATA HDD or 2.5” SAS/SATA HDD or SSD(RM24512) 2 x 2.5’’ hot swap SATA HDD/SSD[7mm or 9.5mm thickness] or NVMe[7mm or 15mm thickness with upgrade kit]
Support for different storage and peripheral options will vary depending on the system model and/or available accessory options
installed. This section will provide an overview of each available option.
BEFORE YOU BEGIN
WARNING: Watch out Safety and ESD precautions instruction before installing the server.

/ Installation │ 18

Page 19

2-1 Top Cover Installation

Figure 12 Front Top Cover Installation
1. Insert the front top cover, and ensure the alignment holes match up on both side.
2. Secure front top cover with two screws as shown.
Figure 13 Rear Top Cover Installation
1. Insert the rear top cover, and ensure the alignment holes match up on both side.
2. Secure rear top cover with two screws as shown.
/ Installation │ 19
Page 20

2-2 HDD Cage Installation

Figure 14 RM24508 HDD Cage Installation
1. Insert HDD cage and carefully align the tabs of the cage with the slots on the chassis
2. Secure HDD cage with two screws as shown.
Figure 15 RM24512 HDD Cage Installation
1. Insert HDD cage and carefully align the tabs of the cage with the slots on the chassis
2. Secure HDD cage with two screws as shown.
/ Installation │ 20
Page 21

2-3 External Hot-swap HDD Tray Instruction

Figure 16 3.5” Hot-swap HDD Tray Installation
1. With the lever open, insert the HDD assembly into the chassis opening and push until the locking lever engaged.
2. Push in the lever to lock it into place.
Figure 17 3.5” Hot-swap HDD Tray Removal
1. Press the tray release button
2. Carefully remove the HDD assembly away from chassis.
/ Installation │ 21
Page 22
Figure 18 3.5” HDD Installation
1. Engage two embossed pin into the side dimples on the HDD as shown
2. Carefully push down the other side of HDD until another two embossed pin and side dimples lock into place
NOTE: Due to degraded performance and reliability concerns, the use of the 3.5” drive blank as a 2.5” device bracket is
intended to support SSD type storage devices only. Installing a 2.5” hard disk drive into the 3.5” drive blank cannot be
supported.
/ Installation │ 22
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Figure 19 2.5 ’’ Hot-swap HDD Tra y Installation
1. With the lever open, insert the HDD assembly into the chassis opening and push until the locking lever engaged.
2. Push in the lever to lock it into place.
Figure 20 2.5 ’’ Hot-swap HDD Tra y Removal
1. Press the tray release button
2. Carefully remove the HDD assembly away from chassis.
/ Installation │ 23
Page 24
Figure 21 2.5 ’’ HDD Installation
1. Engage two embossed pin into the side dimples on the HDD as shown
2. Carefully push down the rear side of HDD until another two embossed pin and side dimples lock into place
NOTE: To ensure proper system air flow requirements, all front drive bays must be populated with a drive carrier. Drive carriers
must be installed with either a drive or supplied drive blank.
There are drive carriers to support 2.5” devices and 3.5” devices. To maintain system thermals, all drive bays must be populated with
a drive carrier mounted with a hard disk drive, SSD, or supplied drive blank. Drive blanks used with the 3.5” drive carrier can also be
used to mount a 2.5” SSD into it as shown below.
Figure 22 2.5 ’’ HDD Installation
/ Installation │ 24
Page 25

2-4 Internal 2.5’’ HDD Installation

Figure 23 RM24508 Internal 2.5'' HDD Installation
1. Attach the HDD carrier with HDD, engage both embossed pins into the side dimples on the HDD as shown
2. Insert the 2.5” HDD assembly into the Chassis
3. Carefully push down the other side of 2.5’’ HDD assembly until another two embossed pins in its position.
/ Installation │ 25
Page 26

2-5 Internal Slim ODD Installation

Figure 24 Internal Slim ODD Installation
1. Attach slim ODD bracket and secure it with two screws as shown.
2. Carefully insert the slim ODD assembly into chassis opening and push until it clicks into place.
/ Installation │ 26
Page 27

2-6 Rack Handle for System Maintenance

1. Firmly grab the rack handle on both sides.
2. Carefully pull out the system with two hands.
Figure 25 Rack Handle Location
/ Installation │ 27
Page 28

2-7 Fan Assembly Installation

Figure 26 RM24508 Fan Assembly Installation
1. Insert fan assembly into the chassis, and ensure the alignment screw holes and tabs on both sides.
2. Secure fan assembly with thumb screws on both side as shown.
Figure 27 RM24508 Fan Holder Installation
1. Ensure both air flow logo on fan and fan holder are in the same direction as shown.
2. Attach fan holder with fan and carefully push down until the click locked into place.
3. Engage two embossed pins into the side dimples on the fan as shown.
4. Firmly push the fan until the click locked into place.
/ Installation │ 28
Page 29
Figure 28 RM24508 Fan Module Installation
1. Insert the cooling fan module into the securing slots until the tabs locked into place.
2. Secure the fan module with one screw as shown.
Figure 29 RM24508 Air Baffle Installation
1. Insert the air baffle into the securing slots until the tabs lock into place.
/ Installation │ 29
Page 30
Figure 30 RM24512 Fan Assembly Installation
1. Insert fan assembly into chassis, and ensure the alignment screw holes and tabs on both sides.
2. Secure fan assembly with thumb screws on both sides as shown.
Figure 31 RM24512 Fan Holder Installation
1. Ensure both air flow logo on fan and fan holder are in the same direction as shown.
2. Firmly connect the fan cable to the fan holder unit.
3. Attach fan holder with fan and carefully push down until the click lock it into place
4. Engage two embossed pin into the side dimples on the fan as shown.
5. Firmly push in until the click lock it into place.
/ Installation │ 30
Page 31
Figure 32 RM24512 Fan Module Installation
1. Insert the cooling fan module into the securing slots until the tabs locked into place.
Figure 33 RM24512 Air Baffle Installation
1. Insert the air baffle into the securing slots until the tabs lock into place.
/ Installation │ 31
Page 32

2-8 2 x 2.5” Hot-swap HDD Cage Installation (Rear Window)

Figure 34 2 x 2.5'' HDD Cage Bracket Installation (Rear Window)
1. Attach HDD cage bracket on the bottom of the chassis, ensure the alignment screw holes matched.
2. Secure the bracket with two screws as shown. (Note: Screw direction must be from outside of chassis to inner)
Figure 35 2 x 2.5'' HDD Cage Installation (Rear Window)
1. Insert the 2.5” HDD cage module into chassis, and ensure the alignment screw holes match.
2. Secure the cage module with one screw as shown.
3. Secure the cage module with thumb screw as shown.
/ Installation │ 32
Page 33
Figure 36 2 x 2.5” HDD Cage Backplane Installation (Rear Window)
1. Attach backplane to the rear of 2.5” HDD cage as shown.
2. Ensure the backplane is firmly engaged with the cage.
3. Secure the backplane with one screw.
/ Installation │ 33
Page 34

2-9 PCI-e Card Installation

Figure 37 Rear Window Exchange
1. Replace low profile rear window to full-height rear window.
2. Secure the rear window with two screws as shown.
Figure 38 Riser card and Riser Bracket Installation
3. Attach riser card on the riser bracket, ensure the alignment screw holes matched and T nails well-stuck.
4. Secure the riser card with one screw as shown.
5. Attach PCIe bracket on the PCIe card and ensure the alignment screw holes matched.
6. Secure PCIe bracket with two screws as shown.
7. Insert PCIe card into PCIe slot.
8. Secure PCIe card and riser bracket with one screw as shown.
/ Installation │ 34
Page 35

2-10 PSU Installation

Figure 39 2U Single PSU Installation
1. Install the PSU into chassis, and ensure alignment screws holes and bracket match.
2. Secure the PSU with three screws on the rear window.
3. Secure the PSU with five screws on the bottom of chassis.
/ Installation │ 35
Page 36
Figure 40 Redundant PSU Cage Assembly
1. Attach PSU bracket to PSU cage (left side), and secure it with two screws.
2. Attach PSU bracket to PSU cage (rear side), and secure it with two screws.
3. Install the PSU Cage into the chassis, and ensure the alignment screw holes and bracket match.
Figure 41 Redundant PSU Cage Installation
4. Secure the PSU cage with four screws as shown.
5. Secure the PSU cage with two screws as shown.
/ Installation │ 36
Page 37
Figure 42 CRPS Module Installation
1. Insert the CRPS module into the PSU cage and push until it clicked into place.
Figure 43 CRPS Module Removal
1. Press and release latch as shown.
2. Carefully pull the PSU out of the chassis
/ Installation │ 37
Page 38

2-11 Slide Rail Installation

Figure 44 Slide rail Installation-1 (384-23803-3300A0)
1. Attach the inner rail with the system while aligning the back shoulder screws on the side of the system with the back slots on the
inner rail.
Figure 45 Slide rail Installation-2 (384-23803-3300A0)
2. Engage the back shoulder screws into their slots.
/ Installation │ 38
Page 39
Figure 46 Slide rail Installation-3 (384-23803-3300A0)
3. Move the latch upward while securing the screw.
4. Secure the inner rail with one screw.
Figure 47 Slide rail Installation-4 (384-23803-3300A0)
5. Carefully install the system into the rack with two hands.
/ Installation │ 39
Page 40
B,D Activity LED
Red
3. Backplane
Each drive carrier includes separate LED indicators for drive Activity and drive Status. Light pipes integrated into the drive carrier
assembly direct light emitted from LEDs mounted next to each drive connector on the backplane to the drive carrier faceplate,
making them visible from the front of the system.
Figure 48 Drive Tray LED Identification
Table 7 Drive Power LED/Activity LED States
LED ICON LED Color Behavior Condition
A,C
NOTE: The drive activity LED is driven by signals coming from the drive itself. Drive vendors may choose to operate the activity
LED different from what is described in the table above. Should the activity LED on a given drive type behave differently than
what is described, customers should reference the drive vendor specifications for the specific drive model to determine what
the expected drive activity LED operation should be.
Power LED
N/A Stay off Hard drive fault has occurred
Blue Solid on When power on
Green Stay on When HDD is busy
Solid on When HDD is failed
1Hz blink When HDD is rebuild
4Hz blink When HDD is locate

/ Backplane │ 40

Page 41

3-1 Storage Backplane Optional

RM245 supports below backplane.
12 x 3.5” Mini SAS HD active backplane 12 x 3.5” Mini SAS HD passive backplane 8 x 3.5” Mini SAS HD passive backplane 2 x 2.5’’ SAS/SATA backplane
All available SAS/SATA compatible backplanes include the following common features:
12Gb/s SAS and 6Gb/s SAS/SATA 29-pin SFF-8680 12Gb/s rated drive interface connectors, providing both power and I/O signals to attached devices Hot swap support for SAS/SATA devices I2C interface from a 4-pin connector for device status communication to the BMC over slave SMBus LEDs to indicate drive activity and status for each attached device
Funct io nality
The microcontroller has a master/slave I2C connection to the server board BMC. The microcontroller is not an IPMB compliant device.
The BMC will generate SEL events by monitoring registers on the HSBP microcontroller for DRIVE PRESENCE, FAULT, and RAID
REBUILD in progress.
/ Backplane │ 41
Page 42
Error LED – Red (When HDD is error)
6. SMD SWITCH 8P

3-2 12G Mini SAS HD 12-Port Active Backplane

Table 8 12G Mini SAS HD 12-Port Active Backplane
Specification
Host Interface Mini SAS HD
HDD Interface SAS / SATA
Hot-Swap Yes, allows user to on line replace Hard Disk Drive
Display LED indicates Hard Disk Drive status
Power LED – Blue (When HDD is present) Access LED – Green (When HDD is busy)
Environment Monitor Temperature senor detect(U7,U8)
Connectors 1. SAS29P *12
2. Mini-SAS HD *2
3. ATX Mini Fit 8P Power connector *2 for +12V only 4, FAN connector 1x4P*4
5. I2C Connector *1
Dimension 432.0(L) x 81.0(W) x 2.4(H) mm
Material FR4 8 layer
Figure 49 12G Mini SAS HD 12-Port Active Backplane – front view
A. HDD_0
B. HDD_1
C. HDD_2
D. HDD_3
E. HDD_4
F. HDD_5
G. HDD_6
H. HDD_7
I. HDD_8
J. HDD_9
K. HDD_10
L. HDD_11
/ Backplane │ 42
Page 43
Drawing
The backplane includes two 2x4 connector
D
FAN connector
The backplane includes four FAN connectors used
F
JC5
Fan setting for RM24512 active BP
On the backside of the backplane are several connectors. The following illustration identifies each.
Figure 50 12G Mini SAS HD 12-Port Active Backplane – rear view
Table 9 Label Description
Label Description Description
A Power connector
supplying power to the backplane. Power is routed to the backplane via a power cable harness from the Power Supply Modules.
B Mini-SAS HD cable connector The backplane includes two multi-port mini-SAS
cable connector providing data signals for twelve SAS/SATA drives on the backplane. A cable can be routed from matching connectors on the server board or add-in SAS/SATA RAID cards.
C I2C connector The backplane includes a 1x4 cable connector used
as a management interface to the server board.
to control FAN speed.
E DIP Switch Follow below dip switch setting
Note: Set the DIP SW1 to OFF for RM24512. Please refer to the picture below.
/ Backplane │ 43
Page 44
1
SYS FAN
2 4 2
PWM
EN
DISABLE
3
TEMP ALRAM
55
65
4
SYS FAN
EN
DISABLE
5
BUZZER
EN
DISABLE
6
SES MON
EN
DISABLE
7/8
I2C ADDR
SET
SET
Table 10 Dip Switch Setting
PIN-Number PIN-Definition ON OFF
Table 11 Fan Setting for RM24512
DIP JC5 Fan
DIP 4 ON，DIP 1 OFF
DIP 4 ON，DIP 1 ON
DIP 4 ON PIN 5,6 SHORT 3
PIN 5,6 OPEN 4
PIN 5,6 OPEN 2
/ Backplane │ 44
Page 45
Hot-Swap
Yes, allows user to on line replace Hard Disk Drive
Display
Error LED – Red (When HDD is error)
Environment Monitor
7. SMD SWITCH 8P
Dimension

3-3 12G Mini SAS HD 12-Port Passive Backplane

Table 12 12G Mini SAS HD 12-Port Passive Backplane
Specification
Host Interface Mini SAS HD
HDD Interface SAS / SATA
LED indicates Hard Disk Drive status Power LED – Blue (When HDD is present) Access LED – Green (When HDD is busy)
Temperature senor detect(U04,U05)
Connectors 1. SAS29P *12
2. Mini-SAS HD *3
3. ATX Mini Fit 8P Power connector *2 for +12V only 4, FAN connector 1x4P*4
5. I2C Connector *1
6. Wafer 2.5mm connector 2P *2
432.0(L) x 81.0(W) x 2.4(H) mm
Material FR4 6 layer
Figure 51 12G Mini SAS HD 12-Port Passive Backplane – front view
A. HDD_0
B. HDD_1
C. HDD_2
D. HDD_3
E. HDD_4
F. HDD_5
G. HDD_6
H. HDD_7
I. HDD_8
J. HDD_9
K. HDD_10
L. HDD_11
/ Backplane │ 45
Page 46
Drawing
The backplane includes two 2x4 connector
D
FAN connector
The backplane includes four FAN connectors used
On the backside of the backplane are several connectors. The following illustration identifies each.
Figure 52 12G Mini SAS HD 12-Port Passive Backplane – rear view
Table 13 Label Description-1
Label Description Description
A Power connector
supplying power to the backplane. Power is routed to the backplane via a power cable harness from the Power Supply Modules.
B Mini-SAS HD cable connector The backplane includes three multi-port mini-SAS
cable connector providing data signals for twelve SAS/SATA drives on the backplane. A cable can be routed from matching connectors on the server board or add-in SAS/SATA RAID cards.
C I2C connector The backplane includes a 1x4 cable connector used
as a management interface to the server board.
to control FAN speed.
E DIP Switch Follow below dip switch setting
/ Backplane │ 46
Page 47
Table 14 MB PWM Connector
Connector Pin Number Pin Definition Input/output Description Drawing
1 MB TACH Output FAN Clock Output to MB
MB PWM Connector
2 MB PWM Input FAN PWM Input from MB
Table 15 Dip Switch Setting
PIN-Number PIN-Definition ON OFF
1 FAN1 EN DISABLE
2 FAN2 EN DISABLE
3 FAN3 EN DISABLE
4 FAN4 EN DISABLE
5 MB PWM EN DISABLE
6 TEMP ALM 55 65
7 ACC MODE SGPIO HDD
8 BUZZER ALM EN DISABLE
/ Backplane │ 47
Page 48
Display
LED indicates Hard Disk Drive status
Connectors

3-4 12G Mini SAS HD 8-Port Passive Backplane

Table 16 12G Mini SAS HD 8-Port Passive Backplane
Specification
Host Interface Mini SAS HD
HDD Interface SAS / SATA
Hot-Swap Yes, allows user to on line replace Hard Disk Drive
Power LED – Blue (When HDD is present) Access LED – Green (When HDD is busy) Error LED – Red (When HDD is error)
Environment Monitor Temperature senor detect(U3)
1. SAS29P *8
2. Mini-SAS HD *2
3. ATX Mini Fit 8P Power connector *1 for +12V only 4, FAN connector 1x4P*4
5. I2C Connector *1
6. SMD SWITCH 1P
Dimension 432.0(L) x 53.2(W) x 2.4(H) mm
Material FR4 4 layer
Figure 53 12G Mini SAS HD 8-Port Passive Backplane – front view
A. HDD_0
B. HDD_1
C. HDD_2
D. HDD_3
E. HDD_4
F. HDD_5
G. HDD_6
H. HDD_7
/ Backplane │ 48
Page 49
Drawing
backplane via a power cable harness from the
D
FAN connector
The backplane includes four FAN connectors used
F
CN3 (Mute pin)
Fan setting for RM24508
G
JC1 (JCK pin)
Fan setting for RM24508
On the backside of the backplane are several connectors. The following illustration identifies each.
Figure 54 12G Mini SAS HD 8-Port Passive Backplane – rear view
Table 17 Label Description
Label Description Description
A Power connector The backplane includes a 2x4 connector supplying
power to the backplane. Power is routed to the
Power Supply Modules.
B Mini-SAS HD cable connector The backplane includes two multi-port mini-SAS
cable connectors providing data signals for eight SAS/SATA drives on the backplane. A cable can be routed from matching connectors on the server board or add-in SAS/SATA RAID cards.
C I2C connector The backplane includes a 1x4 cable connector used
as a management interface to the server board.
to control FAN speed.
E DIP Switch Set the DIP SW1 to OFF for RM24508.
/ Backplane │ 49
Page 50
Table 18 Fan Setting for RM24508
DIP NC3(Mute pin) JA1(JCK pins) Fan
ON PIN 5,6 OPEN PIN 4,6 SHORT 4
ON PIN 5,6 OPEN PIN 2,4 SHORT 2
ON PIN 5,6 SHORT N/A (No matter what status) 3
/ Backplane │ 50
Page 51
Display Connectors
1.SATA 7P *2
4. I2C Connector *1

3-5 12G 2 x 2.5’’ Hot Swap Drive Bay Accessory Kit

Chenbro Accessory Kit Product Code: 83H803237-005
The 2U product family provides the option to support two 6 Gb/s hot swap SATA SSDs installed to a modular drive bay mounted in
the back of the system.
Figure 55 2 x 2.5'' Rear Mount Backplane Kit Placement
Supported SATA SSDs must not exceed the following power and thermal limits:
1 or 2 SATA SSDs supporting up to 4W per device with a case temperature rating of 70 degree C
1 or 2 SATA SSDs supporting up to 1.5W per device with a case temperature rating of 60 degree C
NOTE: The maximum supported SSD power and thermal limits documented above, were derived based on thermal testing
using a maximum system configuration with fan redundancy support operating at ambient input air temp of 35°C. The test
system was based on the system models utilizing a maximum number of front and rear drive storage devices – 12 x 3.5” in
the front + 2 x 2.5” in the back
- Because of thermal limits in this area of the chassis, the rear hot swap drive bay option cannot support 15mm hard disk drives in any
system configuration.
The backplane includes several connectors and a jumper block, as defined in the following illustrations.
Table 19 12G SAS 2-Port Backplane
Specification
Host Interface SATA
HDD Interface SAS / SATA
Hot-Swap Yes, allows user to on line replace Hard Disk Drive
LED indicates Hard Disk Drive status Power LED – Blue (When HDD is present) Access LED – Green (When HDD is busy) Error LED – Red (When HDD is error)
Environment Monitor Temperature senor TMP75 detect(U2)
Dimension 77.0(L) x 38.7(W) x 2.4(H) mm
Material FR4 4 layer
2. SAS 29P *2
3.Standard ATX 4P Power connector *1 for +5V, +12V from power supply
/ Backplane │ 51
Page 52
Figure 56 2 x 2.5'' Hot Swap Backplane – front view
A: HDD0
B: HDD1
Figure 57 2 x 2.5'' Hot Swap Backplane – rear view
/ Backplane │ 52
Page 53
Drawing
RAID cards.
Table 20 Label Description
Label Description Description
A Power Connector The backplane includes a 2x2 cable connector used
as a management interface to the server board.
B SATA 7-pin The backplane includes two SATA 7-pin connectors
providing data signals for two SAS/SATA drives on the backplane. A cable can be routed from matching connectors on the server board or add-in SAS/SATA
C I2C connector The backplane includes a 1x4 cable connector used
as a management interface to the server board.
/ Backplane │ 53
Page 54
Apply a RMA
Return the product for
4. Maintenance and Service
DOA (Dead on Arrival)
If the products are found Defect On Arrival, please contact Chenbro’s regional sales or CQE and indicate the defective status via
email along with product photos and description. You may need to return the defective item by request.
The customer should ensure that the products are Defect On Arrival for up to three months from Chenbro’s shipping date and the
damage is not caused by shipping or failures resulting from accident, misuse, abuse, neglect, mishandling, misapplication,
modification, improper operation, improper repair or rework. CHENBRO is not responsible for the cost of replacement including the
delivery cost.
CHENBRO also reserves the right to examine the DOA products. If the damage of DOA products is caused by improper action as
described above, the customer will be liable for paying the related charge having occurred or paying the fee of the replacements if
the DOA products are totally scrapped.
number
repair
Receive service
charge notice
Receive the repaired
product
TECHNICAL SUPPORT
Please provide following information when you apply our technical support:
Product model name and/or part number Product serial number and bar code Buzzer beeping pattern and/or failure LED flashing pattern Detailed, specific questions
You may also contact Chenbro’s regional technical supports as below- Website: www.chenbro.com
CENBRO MICOM CO., LTD.
Email: fae@chenbro.com
Tel: +886-2-82265500
Fax: +886-2-82265392
CHENBRO MICOM (USA) INC.
Email: usfae@chenbro.com
Tel: +1-909-947-3200
Fax: +1-909-947-4300
CHENBRO GmbH
Email: defae@chenbro.com
Tel: + 49-2154-8142730

/ Maintenance and Service │ 54

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