The information in this User’s Manual has been carefully reviewed and is believed to be accurate.
The vendor assumes no responsibility for any inaccuracies that may be contained in this document,
makes no commitment to update or to keep current the information in this manual, or to notify any
person or organization of the updates. Please Note: For the most up-to-date version of this
manual, please see our web site at www.supermicro.com.
Super Micro Computer, Inc. ("Supermicro") reserves the right to make changes to the product
described in this manual at any time and without notice. This product, including software, if any,
and documentation may not, in whole or in part, be copied, photocopied, reproduced, translated or
reduced to any medium or machine without prior written consent.
IN NO EVENT WILL SUPERMICRO BE LIABLE FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL,
SPECULATIVE OR CONSEQUENTIAL DAMAGES ARISING FROM THE USE OR INABILITY TO
USE THIS PRODUCT OR DOCUMENTATION, EVEN IF ADVISED OF THE POSSIBILITY OF
SUCH DAMAGES. IN PARTICULAR, SUPERMICRO SHALL NOT HAVE LIABILITY FOR ANY
HARDWARE, SOFTWARE, OR DATA STORED OR USED WITH THE PRODUCT, INCLUDING THE
COSTS OF REPAIRING, REPLACING, INTEGRATING, INSTALLING OR RECOVERING SUCH
HARDWARE, SOFTWARE, OR DATA.
Any disputes arising between manufacturer and customer shall be governed by the laws of Santa
Clara County in the State of California, USA. The State of California, County of Santa Clara shall
be the exclusive venue for the resolution of any such disputes. Super Micro's total liability for all
claims will not exceed the price paid for the hardware product.
California Best Management Practices Regulations for Perchlorate Materials: This Perchlorate
warning applies only to products containing CR (Manganese Dioxide) Lithium coin cells. “Perchlorate
Material-special handling may apply. See www.dtsc.ca.gov/hazardouswaste/perchlorate”
WARNING: Handling of lead solder materials used in this
product may expose you to lead, a chemical known to
the State of California to cause birth defects and other
reproductive harm.
Manual Revision 1.0
Release Date: October 1, 2009
Unless you request and receive written permission from Super Micro Computer, Inc., you may not
copy any part of this document.
Information in this document is subject to change without notice. Other products and companies
referred to herein are trademarks or registered trademarks of their respective companies or mark
holders.
A receipt or copy of your invoice marked with the date of purchase is required be-
fore any warranty service will be rendered. You can obtain service by calling your
vendor for a Returned Merchandise Authorization (RMA) number. When returning
to the manufacturer, the RMA number should be prominently displayed on the
outside of the shipping carton, and mailed prepaid or hand-carried. Shipping and
handling charges will be applied for all orders that must be mailed when service
is complete.
For faster service, RMA authorizations may be requested online (http://www.
supermicro.com/support/rma/).
Whenever possible, repack the chassis in the original Supermicro carton, using the
original packaging material. If these are no longer available, be sure to pack the
chassis securely, using packaging material to surround the chassis so that it does
not shift within the carton and become damaged during shipping.
This warranty only covers normal consumer use and does not cover damages in-
curred in shipping or from failure due to the alteration, misuse, abuse or improper
maintenance of products.
During the warranty period, contact your distributor rst for any product problems.
1-3
SC827 Chassis Manual
Notes
1-4
Chapter 2: System Safety
Chapter 2
System Safety
2-1 Overview
This chapter provides a quick setup checklist to get your chassis up and running.
Following the steps in order given should enable you to have your chassis setup and
operational within a minimal amount of time. This quick set up assumes that you are
an experienced technician, famailiar with common concepts and terminology.
2-2 Warnings and Precautions
You should inspect the box the chassis was shipped in and note if it was damaged
in any way. If the chassis itself shows damage, le a damage claim with carrier
who delivered your system.
Decide on a suitable location for the rack unit that will hold that chassis. It should
be situated in a clean, dust-free area that is well venilated. Avoid areas where heat,
electrical noise and eletromagnetic elds are generated.
You will also need it placed near at least one grounded power outlet. When cong-
ured, the SC827 chassis includes one power supply.
2-3 Preparing for Setup
The SC827 chassis includes a set of rail assemblies, including mounting brackets
and mounting screws you will need to install the systems into the rack. Please read
this manual in its entirety before you begin the installation procedure.
2-4 Electrical Safety Precautions
Basic electrical safety precautions should be followed to protect yourself from harm
and the SC827 from damage:
Be aware of the locations of the power on/off switch on the chassis as well •
as the room’s emergency power-off switch, disconnection switch or electrical
outlet. If an electrical accident occurs, you can then quickly remove power from
the system.
2-1
SC827 Chassis Manual
Do not work alone when working with high voltage components.•
Power should always be disconnected from the system when removing or in-•
stalling main system components, such as the serverboard, memory modules
and the DVD-ROM and oppy drives (not necessary for hot swappable drives).
When disconnecting power, you should rst power down the system with the
operating system and then unplug the power cords from all the power supply
modules in the system.
When working around exposed electrical circuits, another person who is fa-•
miliar with the power-off controls should be nearby to switch off the power, if
necessary.
Use only one hand when working with powered-on electrical equipment. This •
is to avoid making a complete circuit, which will cause electrical shock. Use
extreme caution when using metal tools, which can easily damage any electrical
components or circuit boards they come into contact with.
Do not use mats designed to decrease electrostatic discharge as protection from •
electrical shock. Instead, use rubber mats that have been specically designed
as electrical insulators.
The power supply power cord must include a grounding plug and must be •
plugged into grounded electrical outlets.
Serverboard battery: CAUTION - There is a danger of explosion if the onboard •
battery is installed upside down, which will reverse its polarities This battery
must be replaced only with the same or an equivalent type recommended by
the manufacturer. Dispose of used batteries according to the manufacturer’s
instructions.
DVD-ROM laser: CAUTION - this server may have come equipped with a •
DVD-ROM drive. To prevent direct exposure to the laser beam and hazardous
radiation exposure, do not open the enclosure or use the unit in any uncon-
ventional way.
2-2
Chapter 2: System Safety
2-5 General Safety Precautions
Keep the area around the chassis clean and free of clutter.•
Place the chassis top cover and any system components that have been re-•
moved away from the system or on a table so that they won’t accidentally be
stepped on.
While working on the system, do not wear loose clothing such as neckties and •
unbuttoned shirt sleeves, which can come into contact with electrical circuits or
be pulled into a cooling fan.
Remove any jewelry or metal objects from your body, which are excellent metal •
conductors that can create short circuits and harm you if they come into contact
with printed circuit boards or areas where power is present.
After accessing the inside of the system, close the system back up and secure •
it to the rack unit with the retention screws after ensuring that all connections
have been made.
2-6 System Safety
Electrostatic discharge (ESD) is generated by two objects with different electrical
charges coming into contact with each other. An electrical discharge is created to
neutralize this difference, which can damage electronic components and printed
circuit boards. The following measures are generally sufcient to neutralize this
difference before contact is made to protect your equipment from ESD:
Do not use mats designed to decrease electrostatic discharge as protection from •
electrical shock. Instead, use rubber mats that have been specically designed
as electrical insulators.
Use a grounded wrist strap designed to prevent static discharge.•
Keep all components and printed circuit boards (PCBs) in their antistatic bags •
until ready for use.
Touch a grounded metal object before removing any board from its antistatic •
bag.
Do not let components or PCBs come into contact with your clothing, which may •
retain a charge even if you are wearing a wrist strap.
2-3
SC827 Chassis Manual
Handle a board by its edges only; do not touch its components, peripheral chips, •
memory modules or contacts.
When handling chips or modules, avoid touching their pins.•
Put the serverboard and peripherals back into their antistatic bags when not •
in use.
For grounding purposes, make sure your computer chassis provides excellent •
conductivity between the power supply, the case, the mounting fasteners and
the serverboard.
2-4
Chapter 3: Chassis Components
Chapter 3
Chassis Components
3-1 Overview
This chapter describes the most common components included with your chassis.
Some components listed may not be included or compatible with your particular
chassis model. For more information, see the installation instructions detailed later
in this manual.
3-2 Components
Chassis
The SC827 chassis includes twelve hot-swappable hard drive bays. For more
information, visit our Web site at: http://www.supermicro.com.
Backplane
Each SC827 chassis comes equipped with either a SAS-827B or SAS-827T back-
plane. For more information regarding compatible backplanes, view the appendices
found at the end of this manual.
Fans
The SC827 chassis accepts four system fans. System fans for the SC827 chassis
are powered from the motherboards or the HDD backplane. On SC827H model
chassis, the two fans on each side are controlled by two motherboards, so that
when one of the motherboard nodes is removed, the second motherboard will
continue to control both fans. In the SC827T chassis, each fan is controlled by one
motherboard, so if a motherboard drawer is removed, the fan associated with that
motherboard will not continue to operate.
Mounting Rails
The SC827 includes a set of quick-release rails, and can be placed in a rack for
secure storage and use. To setup your rack, follow the step-by-step instructions
included in this manual.
3-1
SC827 Chassis Manual
Power Supply
Each SC827 chassis model includes a high-efciency 80 Plus Gold Level power
supply, rated at 1200 or 1400 Watts. In the unlikely event your power supply fails,
replacement is simple and can be accomplished without tools.
Air Shroud
The SC827 chassis requires mylar air shrouds for each node to direct the airow
where cooling is needed. The air shroud will differ for different motherboards. If using
a motherboard which is not the default in the chassis, refer to the optional parts in
the Appendix of this manual, or the Supermicro Web site at www.supermicro.com
to puchase the proper air shroud.
3-3 Where to get Replacement Components
Although not frequently, you may need replacement parts for your system. To
ensure the highest level of professional service and technical support, we strongly
recommend purchasing exclusively from our Supermicro Authorized Distributors /
System Integrators / Resellers. A list of Supermicro Authorized Distributors / System
Integrators /Reseller can be found at: http://www.supermicro.com. Click the Where
to Buy link.
3-2
Chapter 4: System Interface
!
!
!
!
!
Chapter 4
System Interface
4-1 Overview
There are several LEDs on the control panel and on the drive carriers to keep you
constantly informed of the overall status of the system. SC827 models include four
control panels on the handles of the chassis which control each of the systems.
This chapter explains the meanings of all LED indicators and the appropriate re-
sponse you may need to take.
Figure 4-1: Chassis Control Panel
4-1
SC827 Chassis Manual
!
4-2 Control Panel Buttons
Power: The main power button on each of the four control panels is •
used to apply or remove power from the power supply to each of the
four systems in the chassis. Turning off system power with this but-
ton removes the main power, but keeps standby power supplied to the
system. Therefore, you must unplug system before servicing. The poer
button has a built-in LED which will turn green when the power is on.
UID: When used with a UID compatible motherboard, the UID button is used •
to turn on or off the blue light function of the LED. This is built into the front
side of the UID button and at the rear end of each motherboard node, for those
motherboards which support it. Once the blue light is activated, the unit can be
easily located in very large racks and server banks.
4-3 Control Panel LEDs
The four control panels are located on the front handle of the SC827 chassis. Each
control panel has two additional LEDs. These LEDs provide you with critical informa-
tion related to different parts of the system. This section explains what each LED
indicates when illuminated and any corrective action you may need to take.
Alert: This LED is illuminated when an alert condition occurs. •
A solid red light indicates an overheat condition in the system.
A ashing red light which ashes in one second intervals indicates a fan
failure.
A ashing red light which ashes in four second interfals indicates a power
failure. When notied of an alert, check the routing of the cables and make
sure all fans are present and operating normally. You should also check to
make sure that the chassis covers and air shrouds are installed. Finally, veri-
fy that the heatsinks are installed properly. This LED will remain ashing or on
4-2
Chapter 4: System Interface
as long as the temperature is too high or a fan does not function properly.
NIC: Indicates network activity on either LAN1 or LAN2 when flashing •
.
4-4 Drive Carrier LEDs
The SC827 chassis uses SAS/SATA drives.
SAS/SATA Drives
Each SAS/SATA drive carrier has two LEDs.
Blue: Each Serial ATA drive carrier has a blue LED. When illuminated, this blue •
LED (on the front of the SATA drive carrier) indicates drive activity. A connection
to the SATA backplane enables this LED to blink on and off when that particular
drive is being accessed.
Red: The red LED to indicate an SAS/SATA drive failure. If one of the SAS/SATA •
drives fail, you should be notied by your system management software.
SCSI Drives
This chassis does not support SCSI drives at this time.
4-3
SC827 Chassis Manual
Notes
4-4
Chapter 5: Chassis Setup and Maintenance
!
Chapter 5
Chassis Setup and Maintenance
5-1 Overview
This chapter covers the steps required to install components and perform mainte-
nance on the chassis. The only tool you will need to install components and perform
maintenance is a Phillips screwdriver.
Overview•
Chassis Cover•
Installing and Removing Hard Drives•
Removing and Installing the Backplane•
Installing the Motherboard•
Add-on Card/Expansion Card Setup•
Adapter Card Replacement•
Installing the Air Shrouds•
Checking the Chassis the Air Flow•
Review the warnings and precautions listed in the manual before setting up or servicing this chassis. These include information in Chapter 2: System Safety and the warning/precautions listed in the setup instructions.
5-1
SC827 Chassis Manual
!
5-2 Chassis Cover
1
Remove two
screws
3
1
Figure 5-1: Removing the Chassis Cover
Before operating the SC827 chassis for the rst time, it is important to remove the
protective lm covering the top of the chassis, in order to allow for proper ventila-
tion and cooling.
Removing the Chassis Cover and Protective Film
2
Check Ventilation
Openings
4
1
Remove the two screws which secure the top cover onto the chassis as 1.
shown above.
Lift the top cover up and off the chassis.2.
Peel off the protective lm covering the top cover and the top of the chassis3.
Check that all ventilation openings on the top cover and the top of the chassis 4.
are clear and unobstructed.
Warning: Except for short periods of time, do NOT operate the
server without the cover in place. The chassis cover must be in
place to allow proper airow and prevent overheating.
5-2
Chapter 5: Chassis Setup and Maintenance
5-3 Installing and Removing Hard Drives
The SC827 chassis contains four individual motherboards in separate node draw-
ers. Each motherboard node controls a set of three hard drives. Note that if a
motherboard node drawer is pulled out of the chassis, the hard drives associated
with that node will power down as well.
Motherboard Drawer Locations in the Chassis
Motherboard B
Controls HDDs B1, B2 and B3
Motherboard A
Controls HDDs A1, A2 and A3
MB: B
Motherboard D
Controls HDDs D1, D2 and D3
Motherboard C
Controls HDDs C1, C2 and C3
MB: A
MB: C
MB: D
A
1
B
1
C
1
D
1
Figure 5-2: Hard Drives and the Corresponding Motherboards
5-3
SC827 Chassis Manual
2
1
Figure 5-3: Removing a Hard Drive Tray
Removing Hard Drive Trays from the Chassis
Press the release button on the drive tray. This extends the drive bay handle.1.
Use the handle to pull the drive out of the chassis.2.
5-4
Chapter 5: Chassis Setup and Maintenance
!
Dummy Drive
Drive Tray
Figure 5-4: Chassis Drive Tray
The drives are mounted in drive trays to simplify their installation and removal from
the chassis. These trays also help promote proper airow for the drive bays.
Warning: Except for short periods of time while swapping hard
drives, do not operate the server with the hard drives bays
empty.
1
Figure 5-5: Removing Dummy Drive from Tray
Installing a Drive into the Hard Drive Tray
Remove the screws (2) holding the drive to the tray.1.
Remove the drive from the tray.2.
1
5-5
SC827 Chassis Manual
SAS or SATA
Hard Drive
4
Drive Tray
Figure 5-6: Removing Hard Drive
Install a new drive into the tray with the printed circuit board side facing down 3.
so that the mounting holes align with those in the carrier.
4
Secure the hard drive by tightening all six (6) screws.4.
Use the open handle to replace the drive tray into the chassis. Make sure the 5.
close the drive tray handle.
5-6
Chapter 5: Chassis Setup and Maintenance
5-4 Removing and Installing the Backplane
The SC827 chassis backplane is located behind the hard drives and in front of
the front system fans. Although backplane failure rarely occurs, in the event of a
backplane failure, follow the instructions below.
Removing the Backplane
Removing the Backplane from the Chassis
Power down and unplug the system from any power source.1.
Remove the chassis cover.2.
Disconnect the cabling to the backplane. 3.
Remove all of the hard drive trays from the front of the chassis.4.
Remove the ve upper screws at the top of the backplane and the screw from 5.
the side of the chassis, as indicated by the arrows below.
5
1
Figure 5-7: Removing the Screws at the Top of the Backplane
5-7
SC827 Chassis Manual
Loosen the three screws in the spring bar, located on the oor of the chassis, 6.
indicated by the arrows below.
6
1
Figure 5-8: Loosening the Spring Bar Screws in the Floor of the Chassis
7
1
Figure 5-9: Removing the Backplane from the Chassis
Gently ease the backplane up and out of the chassis at a slight angle.7.
5-8
Chapter 5: Chassis Setup and Maintenance
Installing the Backplane
Installing the Backplane into the Chassis
Ensure that all of the hard drive trays have been removed from the bays in 1.
the front of the chassis and that the spring bar has been loosened as directed
in the previous section.
Secure the side mounting bracket to the backplane with the two screws 2.
provided.
Slide the backplane into the chassis at a slight angle, pushing it up against 3.
the side of the chassis.
Ease the backplane forward, against the front of the chassis. This will aid in 4.
the alignment of the mounting holes.
Align the mounting holes in the backplane with the holes in the chassis. Re-5.
place the four screws at the top of the backplane and the screw on the side
of the chassis.
Adjust the spring bar, then tighten the spring bar screws in the oor of the 6.
chassis.
Reconnect all cables and return the hard drive trays to their bays in the front 7.
of the chassis.
2
1
3
1
4
1
Figure 5-10: Installing the Backplane
5-9
SC827 Chassis Manual
5-5 Installing the Motherboard
I/O Shields
Figure 5-11: I/O Shield Placement
Compatible Motherboards
Most Supermicro Twin series motherboards are compatible with the SC827 chassis.
For the most up-to-date information on compatible motherboards and other parts,
visit the Supermicro Web site at www.supermicro.com.
Hot-swappable motherboards feature different adapter cards, depending upon the
motherboard. Adapter cards are optional and are not included with the chassis. For
information on ordering adapter cards, see the appendix of this manual or visit the
Supermicro Web site at www.supermicro.com.
Permanent and Optional Standoffs
Standoffs prevent short circuits by securing space between the motherboard and
the chassis surface. The SC827 chassis includes permanent standoffs in locations
used by the motherboards. These standoffs accept the rounded Phillips head screws
included in the SC827 accessories packaging.
Some motherboards require additional screws for heatsinks, general components
and/or non-standard security. Optional standoffs are used for these mother-
boards.
To use an optional standoff, you must place a hexagon screw through the bottom
the chassis and secure the screw with the hexagonal nut (rounded side up).
Depending upon the conguration of the motherboard being used, it is also pos-
sible that some of the optional standoffs which are pre-installed in the chassis, may
need to be removed.
5-10
Chapter 5: Chassis Setup and Maintenance
Figure 5-12: Installing the Motherboard in the Motherboard Node Drawer
Installing the Motherboard
Review the documentation that came with your motherboard. Become familiar 1.
with component placement, requirements, precautions, and cable connec-
tions.
Pull the motherboard node drawer out of the back of the chassis. 2.
Remove the add-on card brackets: 3.
3a. Remove screw securing the add-on card bracket to the back of the node
drawer.
3b. Lift the bracket out of the node drawer.
Lay the motherboard in the node drawer aligning the standoffs with the moth-4.
erboard.
Secure the motherboard to the node drawer using the rounded, Phillips head 5.
screws included for this purpose.
Install the adapter card associated with the motherboard if the chassis is a 6.
hot-swappable version. Refer to the next section for instructions on installing
the adapter card
Secure the CPU(s), heatsinks, and other components to the motherboard as 7.
described in the motherboard documentation.
5-11
SC827 Chassis Manual
Connect the cables between the motherboard, backplane, chassis, front 8.
panel, and power supply, as needed. Also, fans may be temporarily removed
to allow access to the backplane ports.
Replace the add-on card bracket and secure the bracket with a screw.9.
Repeat steps 3 - 5 for the remaining nodes.10.
5-12
Chapter 5: Chassis Setup and Maintenance
5-6 Installing and Replacing Adapter Cards
Adapter cards provide hot-swappable functionality to the chassis.
Motherboard
Adapter Card
Drawer
Figure 5-13: Adapter Card Installation
Removing the Adapter Card
Remove the motherboard drawer from the chassis. 1.
Disconnect the wiring, connecting the adapter card to the motherboard if any 2.
is present.
Remove the ve screws securing the adapter card and the spacer plate to the 3.
drawer and set them aside for later use.
Spacer Plate
Five Screws
Remove the adapter card and spacer plate from the motherboard drawer.4.
Set the spacer plate aside for later use.5.
Installing the Adapter Card
Make sure the motherboard has been installed properly in the node drawer 1.
before installing the adapter card
Place the adapter card and spacer plate in the motherboard drawer, aligning 2.
the holes in the spacer and the adapter card with the holes in the mother-
board drawer.
Secure the adapter card and spacer plate to the motherboard drawer, using 3.
the ve M3 athead screws which were previously set aside.
Reconnect the wiring from the motherboard to the adapter card if necessary.4.
Return the motherboard drawer to the closed position in the chassis.5.
5-13
SC827 Chassis Manual
Add-on Card/Expansion Slot Setup
The SC827 chassis supports one low-prole expansion slot for each node, for a
total of four slots in the chassis. To install a low-prole PCI card, follow the instruc-
tions below.
Add-on Card Slot Clip
Figure 5-14: I/O Shield Conguration
5-14
PCI Slot Shield
Figure 5-15: Installing the Riser Card
Installing the Riser Card
Installing the Riser Card
Disconnect the power supply and lay the chassis on a at surface.1.
Pull the motherboard node drawer from the chassis.2.
Chapter 5: Chassis Setup and Maintenance
Remove the add-on card bracket. 3.
3a. Remove the screw securing the add-on bracket to the back of the drawer.
3b. Lift the bracket out of the motherboard node drawer.
Align the riser card mounting hole to the bracket standoff and secure the 4.
riser card to the bracket using the two screws included in the accessory box.
Inser the riser card along with the riser bracket into the motherboard. 5.
Secure the riser bracket to the motherboard node drawer's rear window.6.
5-15
SC827 Chassis Manual
PCI Slot
Add-on Card
Shield
Figure 5-16: Installing the Add-On Card
Installing Add-on Cards
Disconnect the power supply, lay the chassis on a at surface, and open the 1.
chassis cover.
Pull out the motherboard node drawer from the chassis.2.
Riser
Card
Screw
Riser
Card
Pull open the add-on card slot clip in the rear of the motherboard node 3.
drawer.
Remove the PCI slot shield.4.
Place the add-on card into the motherboard node drawer. 5.
Slide the add-on card into the rear riser card slot and t the add-on card 6.
bracket with the opening in the rear of the motherboard node drawer.
Close the add-on card slot clip.7.
5-16
Chapter 5: Chassis Setup and Maintenance
SCALE 1.000
5-7 Installing the Air Shrouds
Air Shrouds
Air shrouds concentrate airow to maximize fan efciency. The SC827 chassis
requires air shrouds for each motherboard node. Air shrouds vary depending upon
the motherboard used. See the illustrations below.
Installing an Air Shroud
Make sure that the motherboard adapter card (if any) and all components are 1.
properly installed in each motherboard node.
Place the rst air shroud over the motherboard, as shown below. The air 2.
shroud sits behind the system fans and goes over the top of the motherboard
and its components.
Repeat the procedure for the remaining three motherboard nodes.3.
Figure 5-17: Installing the Air Shroud with Different Motherboards
5-17
SC827 Chassis Manual
5-8 Checking the Airow
Checking Airow
Make sure there are no objects to obstruct airow in and out of the server. In 1.
addition, if you are using a front bezel, make sure the bezel's lter is replaced
periodically.
Do not operate the server without drives or drive trays in the drive bays. Use 2.
only recommended server parts.
Make sure no wires or foreign objects obstruct airow through the chassis. 3.
Pull all excess cabling out of the airow path or use shorter cables.
The control panel LEDs inform you of system status. See “Chapter 3: System 4.
Interface” for details on the LEDs and the control panel buttons.
Installation Complete
In most cases, the chassis power supply and fans are pre-installed. If you need
to install fans or power supplies, continue to the Systems Fan and Power Supply
sections of this chapter. If the chassis will be installed into a rack, continue to the
next chapter for rack installation instructions.
5-18
Chapter 5: Chassis Setup and Maintenance
5-9 System Fans
Four fans provide cooling for the chassis. These fans circulate air through the chas-
sis as a means of lowering the chassis internal temperature. The SC827 system fans
are easy to change modules. There is no need to uninstall any other parts inside
the system when replacing fans, and no tools are required for installation.
Optional Fan Congurations
The SC827H model chassis is designed so that the default conguration of the
system is for each motherboard to control two fans. Each motherboard node in
the chassis is connected to the backplane through the adapter card, mounted in
the motherboard node drawer. In the event that one of the motherboard drawers is
removed, then the remaining motherboard will operate both fans.
The SC827T model chassis has a default conguration with one fan wired directly
to each motherboard. In the event that one of the motherboard drawers is removed,
then the fan associated with that motherboard will not function until the drawer is
replaced. If multiple controls are desired in the SC827T, an optional cable must be
purchased separately to connect from the backplane to each motherboard node.
Overheat LED: D11Solid on Indicates an overheat condition
D-7
SC827 Chassis Manual
L1
J11
J1
J18
J19
J9
J17
J2
J20
J15
J13
J3
J4
C60
C38
C52
C
A
D19
C
A
D20
C
A
D23
C
A
D29
C
A
D30
C
A
D31
C
A
D32
C
A
D33
C
A
D5
C
A
D6
C A
D7
C
A
D8
C
A
D12
C A
D13
C
A
D14
C
A
D15
C
A
D18
C
A
D21
C
A
D22
C
A
D24
C
A
D25
C
A
D26
C
A
D27
C
A
D28
R148
R149
R151R154
R155
R156
R165
R178
R179
R180
R181
R182
R173
R150
R164
R174
R175
R176
R177
R86
R83R84
R88
R95
#D0
#D1
#D2
REV 1.01
SAS827T
#A0
#A1
#A2
#B2
#B1
#B0#C0
#C1
#C2
ACT#D2
ACT#D1
ACT#D0
ACT#C2
ACT#C0
ACT#C1
ACT#B2
ACT#B1
SAS
SAS
SAS
SAS
SAS
SAS
SAS
SAS
SAS
SAS
SAS
SAS
ACT#B0
ACT#A2
ACT#A1
ACT#A0
D-8 Rear Connectors and LED Indicators
SAS A2
J3
SAS A1
J2
SAS A0
J1
D14
D5
D13
D6
D12
D7
SAS B2
J11
SAS B2
J9
SAS B0
J4
D21
D20
D18
D19
D15
D8
SAS C2
J17
SAS C1
J15
SAS C0
J13
D25
D29
D24
D23
D22
D30
SAS D2
J20
SAS D1
J19
SAS D0
J18
Figure D-5: Rear Connectors and LEDs
Rear SAS/SATA Connectors
Rear
Connector
SAS Drive
Number
Rear
Connector
SAS Drive
Number
SAS #A2 SAS/SATA A2 SAS #C2SAS/SATA C2
SAS #A1 SAS/SATA A1SAS #C1SAS/SATA C1
SAS #A0
SAS/SATA A0
SAS #C0
SAS/SATA C0
SAS #B2SAS/SATA B2SAS #D2SAS/SATA D2
SAS #B1
SAS/SATA B1
SAS #D1
SAS/SATA D1
SAS #B0SAS/SATA B0SAS #D0SAS/SATA D0
Rear LED Indicators
Rear LEDHard Drive Activity
SAS #A0 D12
SAS #A1 D13
SAS #A2D14
SAS #B0D15
SAS #B1D18
SAS #B2D21
SAS #C0D22
SAS #C1D24
SAS #C2D25
SAS #D0D26
SAS #D1D27
SAS #D2D28
D28
D33
D27
D31
D26
D32
D-8
Appendix D: SAS-827B Backplane Specications
SAS Ports
The SAS-827B backplane is designed with four separate sectors, which support
from one to four motherboards indepentdently of each other. The SAS ports are
used to connect the SAS drive cables. The 12 ports are designated A0, A1, A2, B0,
B1, B2, C0, C1, C2 and D0, D1, D2. Each port is also compatible with SATA drives.
Use the table below to determine the SAS port to motherboard conguration that
is appropriate for your system.
SAS Port to Motherboard Congurations
Number of
Motherboards
Using 1 MBA0, A1, A2MB-A
Using 2 MBsA0, A1, A2
Using 3 MBsA0, A1, A2
Using 4 MBsA0, A1, A2
SAS Port
Connectors
B0, B1, B2
B0, B1, B2
C0, C1, C2
B0, B1, B2
C0, C1, C2
D0, D1, D2
Connect to
Motherboard
MB-A
MB-B
MB-A
MB-B
MB-C
MB-A
MB-B
MB-C
MB-D
Figure D-6: Motherboard Locations In the Chassis
D-9
SC827 Chassis Manual
The products sold by Supermicro are not intended for and will not be used in life support systems, medical equipment, nuclear facilities or systems, aircraft, aircraft devices,
aircraft/emergency communication devices or other critical systems whose failure to per-
form be reasonably expected to result in signicant injury or loss of life or catastrophic
property damage. Accordingly, Supermicro disclaims any and all liability, and should
buyer use or sell such products for use in such ultra-hazardous applications, it does so
entirely at its own risk. Furthermore, buyer agrees to fully indemnify, defend and hold
Supermicro harmless for and against any and all claims, demands, actions, litigation,
and proceedings of any kind arising out of or related to such ultra-hazardous use or
sale.
Disclaimer (cont.)
D-10
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