Chenbro RM245 Series User manual

RM245 Series
Rackmount Chassis User Manual
October 2018 Version 1.0
A docum ent providing an over view of product f eat ures, f unct ions, archit ecture, and suppor t specif icat ions

RM245 Series
<Table of Contents │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.

RM245 Series
<Table of Contents │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

RM245 Series
List of Figures │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

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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

RM245 Series
List of Tables │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

RM245 Series
Product Overview │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 1Chenbro RM24508/12 Specifications
Feature Description
M/B Form Factor CEB（12’’x10.5’’）/ ATX (12’’x9.6’’)
Dimension
(Dx Wx H)
559mm x 438mm x 87mm
22’’ x 17.2’’ x 3.5’’
Drive Bay RM24508: 8x3.5’’ Hot-swap, 2x2.5’’ internal, 1xslim ODD, 2x 2.5” Hot-swap(at rear, optional)
RM24512: 12x3.5’’ Hot-swap, 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 2xUSB3.0
System Security Intrusion switch(option)
Cooling Fans(Max) Middle: Hot-swap 3x 80mm(up to 4), PWM
Fixed 2x 80mm, PWM
Expansion Slot 7x Low Profile or 3x Full height
Front Bezel 2U sheet metal bezel
Slide Rail Tool-less
Cubic Feet 2.89
Container Loading 20’:260,40’:560,40’H:616

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Product Overview │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 Technical 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.

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Product Overview │9
1-2 System Outlook Overview
Figure 1 RM24508 Outlook Overview
Figure 2RM24512 Outlook Over view

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Product Overview │10
Figure 3 RM24508 Major Components Overview
Figure 4RM24512 Major Components Overview
A. Front Top Cover
B. Back Top Cover
C. Label Emboss
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

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Product Overview │11
1-3 Front Panel
Figure 5 RM24508 3.5’’ Drive Bay-8
Figure 6 RM24512 Drive Bay-12
A. Front Control Panel
B. Storage Drive Bay
C. Info Tag
D. Rack Handles
E. Optical Drive Bay

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Product Overview │12
1-4 Rear Window Overview
Figure 7 Rear Window Overview (Single PSU)
Figure 8Rear Window Overview (Redundant PSU)
A. 2U Single Power Supply
B. CRPS Power Supply
C. I/O Ports
D. Low Profile Expansion Slots
E. Full Height Expansion Slots
F. Optical Drive Bay

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Product Overview │13
1-5 Front Control Panel Overview
Figure 9Front Control Panel
Table 2RM245 Series System Overview
Label ICON Overview
A Power Button
B UID Button
C Reset Button
D USB 3.0
E HDD Activity LED
F System Alarm LED
G LAN1,LAN2 Activity LED
H Rack Handle (Left)
I Rack Handle (Right)

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Product Overview │14
1-6 System Dimensions
Figure 10 Chassis Dimensions
Figure 11 Label Emboss Dimensions

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Product Overview│15
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)
Part Number
384-23803-3300A0
(A5612784)
84H314610-003
(3A02-599)
Rail Dimension (mm/inch)
835/32.9"
599/23.6"
Applicable Cabinet-post to post (mm/inch) 668~936 / 23.6"~36.9" 660~838 / 26"~33"
3 Section/2 Section
3 Section
2 Section
Post to Post Distance (mm/inch) 668~936 / 23.6"~36.9" 660~838 /
26"~33"
Traveling Distance (mm/inch)
782/30.8"
560/22.0"
Support chassis width 438 438.5
Loading (kg)
30.8kg
15kg
Max. static loading (kg) for UL around 100kg around 60kg
Tool-less/Non tool-less Tool-less Tool-less
Support CMA Yes No

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Product Overview │16
1-8 System Level Environmental Limits
The following table defines the system level operating and non-operating environmental limits.
Table 4System Environmental Limits Summary
Parameter
Limits
*Range may vary, refer to Technical Product Specification*
Temperature Non-Operating -40º C to 70º C (-40º F to 158º F)
Humidity Non-Operating 50% to 90%, non-condensing with a maximum wet bulb of 28° C (at
temperatures from 25° C to 35° C)
Shock Unpackaged Trapezoidal, 25 g, velocity change is based on Product weight
Vibration
Operating
5 Hz @ 0.0002 g2/Hz to 350 Hz @ 0.0002 g2/Hz
Input acceleration is 0.26 g RMS
10 minutes per axis for all 3 axes on all samples
Random control limit tolerance is ± 3 dB
EMI
Pre-scan
Radiated Emissions
International (CISPR 22) Radiated Limits for Radiating Class A & B Devices
Frequency range(MHz)/Class A and Class B(10 meters limits):
30MHz to 300 MHz / 40 dB ( V/m) and 30 dB ( V/m)
200MHz to 1000 MHz / 47 dB ( V/m) and 37 dB ( V/m)
RVI
Operating
HDD class
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
second) expressed as a percent of Test HDD maximum theoretical
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
128K Sequential Writes.

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Product Overview │17
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
（kg）
Net Weight (Lb
s.)
Gross Weight
(Lbs.)
RM24508 9.5 12 16.5 26.4
RB24512 9.5 12 16.5 26.4
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).

RM245 Series
/ Installation │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.

RM245 Series
/ Installation │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.

RM245 Series
/ Installation │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.