Supero SAS-827B User manual

Rev. 1.0
SAS-827B Backplane
USER'S GUIDE
11
12 22
23
33
3444
BZ1
+
TP5
TP1
TP3
TP2
1
4
J21
1
JP36
1
JP35
JPI2C1
1
5
U37
U44 U43
U38
JPW3
1
5
4
8
JPW2 1
5
4
8
JPW1
12
24
13
1
JF4 50
51
45
1 2
46
54 47
24 23 JF3 50
51
45
1 2
46
54
47
24
23
JF2
50 51
45
1 2
46
54 47
24
23
JF1
50
51
45
1 2
46
54
47
24
23
F13
F14
F15
F16
RT6
JP18
1 3
JP30
13
4
1
JP55
4
1
JP54
4
1
JP57
4
1
JP56
JF5
JF6
U13
DESIGNED IN USA
F19
F20
F21
F22
F23
F24
F25
F26
F27
F28
F29
F30
F31
F32
F33
F34
F35
F36
F38
F10
F11
F12
F17
F7 F8 F9
C196
C210
C194
C121
C155
C158
C26
C28
C29
C266
C267
C268
C269
C39
C4
C115
C156
C159
C168
C171
C174
C177
C57
C58
C64
C77
C80
C195
C193
C114
C124
C143
C167
C170
C173
C176
C18
C19
C21
C79
+
C199
+
C200
+
C203
+
C119
+C197
+
C198
+
C201 +C3
+
C44
+
C45
+C84
+
C85
C43C46
C49
C67
C53
C42
C116
C123
C126
C14
C15
C157
C160
C169
C17
C175
C178
C24
C25
C48
C78
C
AD1
C
AD11
R206
R203 R204
R69
R65 R64
R222
R223
R224
R128
R132
R133
R134
R135
R49
R51
R214 R215
R216
R217
R187
R186
R188
R142
R144
R145
R67
R11
R141
R48
R53
R12 R10
R106
R107
R121
R125
R85
CR13
CR4
CR5
CR6
D79
D78
D76
D74
D73
D71
D70
D69
D67
D66
D65
D63
D62
D61
D60
D59
D58
D57
D56
D55
JP69
BAR CODE
JF6-CD
JF5-AB
MB-C
MB-D
MB-A
MB-B
1
1
JP36:
OPEN:DEFAULT
CLOSE:ANYPOWER BUTTON
JP35:
OPEN:DEFAULT
CLOSE:LEDTEST
TO PS
SPI
DEBUG
JP30:
OPEN:45
C
2-3:55
C
C DEFAULT
1-2:50
FAN4
FAN3
FAN2
FAN1
JP18
2-3:TEST
1-2:BUZZERENABLE
OPEN:BUZZERDISABLE
BUZZER RESET
REV 1.01
SAS827B
SUPER ®

SAS-827B Backplane User’s Guide
ii
Manual Revision 1.0
Release Date: April 10, 2009
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.
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.
Copyright © 2009 by Super Micro Computer, Inc.
All rights reserved.
Printed in the United States of America

Preface
iii
Table of Contents
Contacting Supermicro.......................................................................................iv
Returning Merchandise for Service.....................................................................v
Chapter 1 SAS-827B Safety Guidelines
1-1 ESD Safety Guidelines ................................................................................... 1-1
1-2 General Safety Guidelines .............................................................................. 1-1
1-3 An Important Note to Users ............................................................................ 1-2
1-4 Introduction to the SAS-827B Backplane ....................................................... 1-2
Chapter 2 Jumpers and Pin Denitions
2-1 Front Connectors ............................................................................................ 2-1
Front Connectors ............................................................................................ 2-1
2-2 FrontJumpersandPinDenitions.................................................................. 2-4
Explanation of Jumpers .................................................................................. 2-4
2-3 Front LED Indicator......................................................................................... 2-5
Front Panel LED ............................................................................................. 2-5
2-4 Rear Connectors and LED Indicators............................................................. 2-6
SAS Ports........................................................................................................ 2-7

SAS-827B Backplane User’s Guide
iv
Contacting Supermicro
Headquarters
Address: Super Micro Computer, Inc.
980 Rock Ave.
San Jose, CA 95131 U.S.A.
Tel: [phone]
Fax: [phone]
Email: [email protected] (General Information)
[email protected] (Technical Support)
Web Site: www.supermicro.com
Europe
Address: Super Micro Computer B.V.
Het Sterrenbeeld 28, 5215 ML
's-Hertogenbosch, The Netherlands
Tel: [phone]
Fax: [phone]
Email: [email protected] (General Information)
[email protected] (Technical Support)
[email protected] (Customer Support)
Asia-Pacic
Address: Super Micro Computer, Inc.
4F, No. 232-1, Liancheng Rd.
Chung-Ho 235, Taipei County
Taiwan, R.O.C.
Tel: [phone]
Fax: [phone]
Web Site: www.supermicro.com.tw
Technical Support:
Email: [email protected]
Tel: [phone]

Preface
v
Returning Merchandise for Service
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.super-
micro.com/support/rma/).
Whenever possible, repack the backplane in the original Supermicro box, using the
original packaging materials. If these are no longer available, be sure to pack the
backplane in an anti-static bag and inside the box. Make sure that there is enough
packaging material surrounding the backplane so that it does not 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.

SAS-827B Backplane User’s Guide
vi
Notes

1-1
Chapter 1: Safety Guidelines
Chapter 1
SAS-827B Safety Guidelines
To avoid personal injury and property damage, carefully follow all the safety steps
listed below when accessing your system or handling the components.
1-1 ESD Safety Guidelines
Electrostatic Discharge (ESD) can damage electronic components. To prevent dam-
age to your system, it is important to handle it very carefully. The following measures
are generally sufcient to protect your equipment from ESD.
Use a grounded wrist strap designed to prevent static discharge.•
Touch a grounded metal object before removing a component from the antistatic•
bag.
Handle the backplane by its edges only; do not touch its components, peripheral•
chips, memory modules or gold contacts.
When handling chips or modules, avoid touching their pins.•
Put the card and peripherals back into their antistatic bags when not in use.•
1-2 General Safety Guidelines
Always disconnect power cables before installing or removing any components•
from the computer, including the SAS-827B backplane.
Disconnect the power cable before installing or removing any cables from the•
SAS-827B backplane.
Make sure that the SAS-827B backplane is securely and properly installed on•
the motherboard to prevent damage to the system due to power shortage.

1-2
SAS-827B Backplane User's Guide
1-3 An Important Note to Users
All images and layouts shown in this user's guide are based upon the latest PCB•
Revision available at the time of publishing. The card you have received may or
may not look exactly the same as the graphics shown in this manual.
1-4 Introduction to the SAS-827B Backplane
The SAS-827B backplane has been designed to utilize the most up-to-date technol-
ogy available, providing your system with reliable, high-quality performance.
ThismanualreectsSAS-827BRevision1.01,themostcurrentreleaseavailableat
the time of publication. Always refer to the Supermicro Web site at www.supermicro.
comforthelatestupdates,compatiblepartsandsupportedcongurations.

2-1
Chapter 2: Safety Guidelines
11
12 22
23
33
3444
BZ1
+
TP5
TP1
TP3
TP2
1
4
J21
1
JP36
1
JP35
JPI2C1
1
5
U37
U44 U43
U38
JPW3
1
5
4
8
JPW2 1
5
4
8
JPW1
12
24
13
1
JF4 50
51
45
1 2
46
54 47
24 23 JF3 50
51
45
1 2
46
54
47
24
23
JF2
50 51
45
1 2
46
54 47
24
23
JF1
50
51
45
1 2
46
54
47
24
23
F13
F14
F15
F16
RT6
JP18
1 3
JP30
13
4
1
JP55
4
1
JP54
4
1
JP57
4
1
JP56
JF5
JF6
U13
DESIGNED IN USA
F19
F20
F21
F22
F23
F24
F25
F26
F27
F28
F29
F30
F31
F32
F33
F34
F35
F36
F38
F10
F11
F12
F17
F7 F8 F9
C196
C210
C194
C121
C155
C158
C26
C28
C29
C266
C267
C268
C269
C39
C4
C115
C156
C159
C168
C171
C174
C177
C57
C58
C64
C77
C80
C195
C193
C114
C124
C143
C167
C170
C173
C176
C18
C19
C21
C79
+
C199
+
C200
+
C203
+
C119
+C197
+
C198
+
C201 +C3
+
C44
+
C45
+C84
+
C85
C43C46
C49
C67
C53
C42
C116
C123
C126
C14
C15
C157
C160
C169
C17
C175
C178
C24
C25
C48
C78
C
AD1
C
AD11
R206
R203 R204
R69
R65 R64
R222
R223
R224
R128
R132
R133
R134
R135
R49
R51
R214 R215
R216
R217
R187
R186
R188
R142
R144
R145
R67
R11
R141
R48
R53
R12 R10
R106
R107
R121
R125
R85
CR13
CR4
CR5
CR6
D79
D78
D76
D74
D73
D71
D70
D69
D67
D66
D65
D63
D62
D61
D60
D59
D58
D57
D56
D55
JP69
BAR CODE
JF6-CD
JF5-AB
MB-C
MB-D
MB-A
MB-B
1
1
JP36:
OPEN:DEFAULT
CLOSE:ANYPOWER BUTTON
JP35:
OPEN:DEFAULT
CLOSE:LEDTEST
TO PS
SPI
DEBUG
JP30:
OPEN:45
C
2-3:55
C
C DEFAULT
1-2:50
FAN4
FAN3
FAN2
FAN1
JP18
2-3:TEST
1-2:BUZZERENABLE
OPEN:BUZZERDISABLE
BUZZER RESET
REV 1.01
SAS827B
Chapter 2
Jumpers and Pin Denitions
2-1 Front Connectors
Front Connectors
Main Power Connector: JPW11.
Secondary Power Connector:2.
JPW2
Secondary Power Connector:3.
JPW3
Chassis Fan Connector: Fan14.
JP54
Chassis Fan Connector: Fan25.
JP55
Chassis Fan Connector: Fan36.
JP56
Chassis Fan Connector Fan47.
JP57
Power Supply Connector: JPI8. 2C1
MB-A hot plug connector: JF19.
MB-B hot plug connector: JF210.
MB-C hot plug connector: JF311.
MB-D hot plug connector: JF412.
Backplane to front panel connec-13.
tor: JF5
Backplane to front pannel con-14.
nector: JF6
1
3
1
4
1
1
1
5
1
6
1
8
1
9
1
7
1
2
1
13
1
14 1
11
1
12 1
10
Figure 2-1: Front Connectors

2-2
SAS-827B Backplane User's Guide
1. - 3. Motherboard Power Connectors
These connectors, designated JPW1, JPW2,
and JPW3 supply power the four motherboard
nodes in the chassis.
4. - 7. Chassis Fan Connectors
These connectors, designated JP54, JP55,
JP56 and JP57 supply power to the chassis.
cooling fans.
FAN4 FAN3 FAN2 FAN1
Cables
SAS-827B Backplane
System Fans
Figure 2-2: Default Conguration - Fans Connected Directly to the Backplane
4
11
12 22
23
33
3444
BZ1
+
TP5
TP1
TP3
TP2
1
4
J21
1
JP36
1
JP35
JPI2C1
1
5
U37
U44 U43
U38
JPW3
1
5
4
8
JPW2 1
5
4
8
JPW1
12
24
13
1
JF4 50
51
45
1 2
46
54 47
24 23 JF3 50
51
45
1 2
46
54
47
24
23
JF2
50 51
45
1 2
46
54 47
24
23
JF1
50
51
45
1 2
46
54
47
24
23
F13
F14
F15
F16
RT6
JP18
1 3
JP30
13
4
1
JP55
4
1
JP54
4
1
JP57
4
1
JP56
JF5
JF6
U13
DESIGNEDIN USA
F19
F20
F21
F22
F23
F24
F25
F26
F27
F28
F29
F30
F31
F32
F33
F34
F35
F36
F38
F10
F11
F12
F17
F7 F8 F9
C196
C210
C194
C121
C155
C158
C26
C28
C29
C266
C267
C268
C269
C39
C4
C115
C156
C159
C168
C171
C174
C177
C57
C58
C64
C77
C80
C195
C193
C114
C124
C143
C167
C170
C173
C176
C18
C19
C21
C79
+
C199
+
C200
+
C203
+
C119
+C197
+
C198
+
C201 +C3
+
C44
+
C45
+C84
+
C85
C43C46
C49
C67
C53
C42
C116
C123
C126
C14
C15
C157
C160
C169
C17
C175
C178
C24
C25
C48
C78
C
AD1
C
AD11
R206
R203 R204
R69
R65 R64
R222
R223
R224
R128
R132
R133
R134
R135
R49
R51
R214 R215
R216
R217
R187
R186
R188
R142
R144
R145
R67
R11
R141
R48
R53
R12 R10
R106
R107
R121
R125
R85
CR13
CR4
CR5
CR6
D79
D78
D76
D74
D73
D71
D70
D69
D67
D66
D65
D63
D62
D61
D60
D59
D58
D57
D56
D55
JP69
BAR CODE
JF6-CD
JF5-AB
MB-C
MB-D
MB-A
MB-B
1
1
JP36:
OPEN:DEFAULT
CLOSE:ANYPOWERBUTTON
JP35:
OPEN:DEFAULT
CLOSE:LEDTEST
TOPS
SPI
DEBUG
JP30:
OPEN:45
C
2-3:55
C
CDEFAULT
1-2:50
FAN4
FAN3
FAN2
FAN1
JP18
2-3:TEST
1-2:BUZZERENABLE
OPEN:BUZZERDISABLE
BUZZERRESET
REV1.01
SAS827B
9. - 12. Motherboard to Backplane Connec-
tors
These connectors, designated JF1, JF2,
JF3 and JF4 connect the motherboards to
the backplane on the chassis. JF1 connects
to motherboard A. JF2 connects to mother-
board B. JF3 connects to motherboard C
and JF4 connects to motherboard D. See
the table on the previous page to determine
the locations of the motherboards within
the chassis.
8. Power Supply Connector
The 5-pin connector, designated JPI2C1
provides power to the SMBUS and power
control signals.

2-3
Chapter 2: Safety Guidelines
13. - 14. Backplane to Front Panel Headers
These connectors are designated JF5 and
JF6. They connect the backplane to the
front LED panels on the chassis. JF5 con-
nects to the LED display panel for mother-
boards A and B. JF6 connects to the LED
display panel for motherboards C and D.

2-4
SAS-827B Backplane User's Guide
2-2 Front Jumpers and Pin Denitions
11
12 22
23
33
3444
BZ1
+
TP5
TP1
TP3
TP2
1
4
J21
1
JP36
1
JP35
JPI2C1
1
5
U37
U44 U43
U38
JPW3
1
5
4
8
JPW2 1
5
4
8
JPW1
12
24
13
1
JF4 50
51
45
1 2
46
54 47
24 23 JF3 50
51
45
1 2
46
54
47
24
23
JF2
50 51
45
1 2
46
54 47
24
23
JF1
50
51
45
1 2
46
54
47
24
23
F13
F14
F15
F16
RT6
JP18
1 3
JP30
13
4
1
JP55
4
1
JP54
4
1
JP57
4
1
JP56
JF5
JF6
U13
DESIGNED IN USA
F19
F20
F21
F22
F23
F24
F25
F26
F27
F28
F29
F30
F31
F32
F33
F34
F35
F36
F38
F10
F11
F12
F17
F7 F8 F9
C196
C210
C194
C121
C155
C158
C26
C28
C29
C266
C267
C268
C269
C39
C4
C115
C156
C159
C168
C171
C174
C177
C57
C58
C64
C77
C80
C195
C193
C114
C124
C143
C167
C170
C173
C176
C18
C19
C21
C79
+
C199
+
C200
+
C203
+
C119
+C197
+
C198
+
C201 +C3
+
C44
+
C45
+C84
+
C85
C43C46
C49
C67
C53
C42
C116
C123
C126
C14
C15
C157
C160
C169
C17
C175
C178
C24
C25
C48
C78
C
AD1
C
AD11
R206
R203 R204
R69
R65 R64
R222
R223
R224
R128
R132
R133
R134
R135
R49
R51
R214 R215
R216
R217
R187
R186
R188
R142
R144
R145
R67
R11
R141
R48
R53
R12 R10
R106
R107
R121
R125
R85
CR13
CR4
CR5
CR6
D79
D78
D76
D74
D73
D71
D70
D69
D67
D66
D65
D63
D62
D61
D60
D59
D58
D57
D56
D55
JP69
BAR CODE
JF6-CD
JF5-AB
MB-C
MB-D
MB-A
MB-B
1
1
JP36:
OPEN:DEFAULT
CLOSE:ANYPOWER BUTTON
JP35:
OPEN:DEFAULT
CLOSE:LEDTEST
TO PS
SPI
DEBUG
JP30:
OPEN:45
C
2-3:55
C
C DEFAULT
1-2:50
FAN4
FAN3
FAN2
FAN1
JP18
2-3:TEST
1-2:BUZZERENABLE
OPEN:BUZZERDISABLE
BUZZER RESET
REV 1.01
SAS827B
JP69
Buzzer
JP30
J21
JP18 JP36JP35
Explanation of Jumpers
To modify the operation of the backplane,
jumpers can be used to choose between
optional settings. Jumpers create shorts
between two pins to change the function
of the connector. Pin 1 is identied with
a square solder pad on the printed circuit
board. Note: On two pin jumpers, "Closed"
means the jumper is on and "Open" means
the jumper is off the pins.
Connector
Pins
Jumper
Setting
3 2 1
3 2 1
Jumper Settings
Jumper Jumper Settings Notes
JP18
Open: Buzzer disabled
1-2: Buzzer enabled (Default)
2-3: Test setting
*Buzzer reset
JP30
Overheat Settings
Open: 45º Celsius
1-2: 50º Celcius (Default)
2-3: 55º Celcius
Backplane overheat settings
JP35 Open: Default
Closed: LED test
LED testing
JP36
Open: Default , multiple power
button functionality
Closed: Single power button
functionality
Any power button
JP69 FW upgrade connector
Figure 2-3: Front Jumpers
*The buzzer sound indicates that a condition requiring immediate attention has
occurred.
The backplane buzzer alarm is triggered by the following condition:
Backplane temperature over 45º, 50º or 55º Celsius, depending upon the1.
overheat setting selected. See the table above for details.

2-5
Chapter 2: Safety Guidelines
Front Panel LED
LED State Specication
Heartbeat LED: D1 Blinking Blinking heartbeat indicates backplane activity
Overheat LED: D11 Solid on Indicates an overheat condition
11
12 22
23
33
3444
BZ1
+
TP5
TP1
TP3
TP2
1
4
J21
1
JP36
1
JP35
JPI2C1
1
5
U37
U44 U43
U38
JPW3
1
5
4
8
JPW2 1
5
4
8
JPW1
12
24
13
1
JF4 50
51
45
1 2
46
54 47
24 23 JF3 50
51
45
1 2
46
54
47
24
23
JF2
50 51
45
1 2
46
54 47
24
23
JF1
50
51
45
1 2
46
54
47
24
23
F13
F14
F15
F16
RT6
JP18
1 3
JP30
13
4
1
JP55
4
1
JP54
4
1
JP57
4
1
JP56
JF5
JF6
U13
DESIGNED IN USA
F19
F20
F21
F22
F23
F24
F25
F26
F27
F28
F29
F30
F31
F32
F33
F34
F35
F36
F38
F10
F11
F12
F17
F7 F8 F9
C196
C210
C194
C121
C155
C158
C26
C28
C29
C266
C267
C268
C269
C39
C4
C115
C156
C159
C168
C171
C174
C177
C57
C58
C64
C77
C80
C195
C193
C114
C124
C143
C167
C170
C173
C176
C18
C19
C21
C79
+
C199
+
C200
+
C203
+
C119
+C197
+
C198
+
C201 +C3
+
C44
+
C45
+C84
+
C85
C43C46
C49
C67
C53
C42
C116
C123
C126
C14
C15
C157
C160
C169
C17
C175
C178
C24
C25
C48
C78
C
AD1
C
AD11
R206
R203 R204
R69
R65 R64
R222
R223
R224
R128
R132
R133
R134
R135
R49
R51
R214 R215
R216
R217
R187
R186
R188
R142
R144
R145
R67
R11
R141
R48
R53
R12 R10
R106
R107
R121
R125
R85
CR13
CR4
CR5
CR6
D79
D78
D76
D74
D73
D71
D70
D69
D67
D66
D65
D63
D62
D61
D60
D59
D58
D57
D56
D55
JP69
BAR CODE
JF6-CD
JF5-AB
MB-C
MB-D
MB-A
MB-B
1
1
JP36:
OPEN:DEFAULT
CLOSE:ANYPOWER BUTTON
JP35:
OPEN:DEFAULT
CLOSE:LEDTEST
TO PS
SPI
DEBUG
JP30:
OPEN:45
C
2-3:55
C
CDEFAULT
1-2:50
FAN4
FAN3
FAN2
FAN1
JP18
2-3:TEST
1-2:BUZZERENABLE
OPEN:BUZZERDISABLE
BUZZER RESET
REV 1.01
SAS827B
2-3 Front LED Indicator
D1
D11
Figure 2-4: Front LED

2-6
SAS-827B Backplane User's Guide
Figure 2-5: Rear Connectors and LEDs
2-4 Rear Connectors and LED Indicators
Rear SAS/SATA Connectors
Rear
Connector
SAS Drive
Number
Rear
Connector
SAS Drive
Number
SAS #A2 SAS/SATA A2 SAS #C2 SAS/SATA C2
SAS #A1 SAS/SATA A1 SAS #C1 SAS/SATA C1
SAS #A0 SAS/SATA A0 SAS #C0 SAS/SATA C0
SAS #B2 SAS/SATA B2 SAS #D2 SAS/SATA D2
SAS #B1 SAS/SATA B1 SAS #D1 SAS/SATA D1
SAS #B0 SAS/SATA B0 SAS #D0 SAS/SATA D0
Rear LED Indicators
Rear LED Hard Drive Activity
SAS #A0 D12
SAS #A1 D13
SAS #A2 D14
SAS #B0 D15
SAS #B1 D18
SAS #B2 D21
SAS #C0 D22
SAS #C1 D24
SAS #C2 D25
SAS #D0 D26
SAS #D1 D27
SAS #D2 D28
D15
D8
SAS B0
J4
D28
D33
SAS D2
J20 D27
D31
SAS D1
J19 D26
D32
SAS D0
J18
D25
D29
SAS C2
J17 D24
D23
SAS C1
J15 D22
D30
SAS C0
J13
D21
D20
SAS B2
J11 D18
D19
SAS B2
J9
D14
D5
SAS A2
J3 D13
D6
SAS A1
J2 D12
D7
SAS A0
J1
L1
J11
J1 J18
J19
J9
J17
J2
J20
J15
J13
J3
J4
C60
C38
C52
C
A
D19
CA
D20
C
A
D23
CA
D29
C
A
D30
CA
D31
C
A
D32
CA
D33
CA
D5
C
A
D6
C A
D7
CA
D8
C
A
D12
C A
D13
CA
D14
CA
D15
CA
D18
CA
D21
C
A
D22
C
A
D24
CA
D25
C
A
D26
C
A
D27
CA
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

2-7
Chapter 2: Safety Guidelines
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congurationthat
is appropriate for your system.
SAS Port to Motherboard Congurations
Number of
Motherboards
SAS Port
Connectors
Connect to
Motherboard
Using 1 MB A0, A1, A2 MB-A
Using 2 MBs A0, A1, A2
B0, B1, B2
MB-A
MB-B
Using 3 MBs A0, A1, A2
B0, B1, B2
C0, C1, C2
MB-A
MB-B
MB-C
Using 4 MBs A0, A1, A2
B0, B1, B2
C0, C1, C2
D0, D1, D2
MB-A
MB-B
MB-C
MB-D
Figure 2-6: Motherboard Locations In the Chassis

2-8
SAS-827B Backplane User's Guide
Disclaimer (cont.)
The products sold by Supermicro are not intended for and will not be used in life sup-
port 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signicant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.