Supermicro SC826 JBOD User Manual page 80

SC826 JBOD Chassis Manual
Dual Port and Cascading Configurations
B-9 Single and Dual Port Expanders
SAS connectors PRI-J1 to J4 and SEC-J1 to J4 are bidirectional and can be treated
as input or output.
Single Ports
BPN-SAS3-826EL1 backplanes have a single port expander that accesses all of
the drives and supports cascading.
Secondary Expander
Not Present on EL1 Models
J23
MH8
MH4 1 4
+ +
SEC-UART
C496 C497
C5
U6
U17
JPW3
C52
MH5
U21
C681
C689
L22
U20
JPW2
JPW1 U14
L23
Figure B-5. BPN-SAS3-826EL1 Single Port Configuration
Dual Ports
BPN-SAS3-826EL2 model backplanes have dual-port expanders that access all
of the hard drives. These dual-port expanders support cascading, failover, and
recovery.
Port B: Secondary Expander Ports
J23
MH8
SEC-J4
MH4 1 4
+ +
SEC-UART
C496 C497
SEC-J3
C5
U6
U17
JPW3 SEC-J2
C52
MH5
U21
C681
C689
L22
SEC-J1
U20
JPW2
JPW1 U14
L23
From HBA#2 or
Higher Backplane
Figure B-6. BPN-SAS3-826EL2 Dual Port Configuration
HB-LED
LED28
7 I2C#4
J21 U30
SEC-J4
MH9
24 U34
4
3 2 1 SAS CODE
SEC-SDB
J19
1 4
C495
ACT-LED
U27 SECONDARY EXPANDER
TEST
+
J17
SEC-J3
JP1
MH3
C499
+
SEC-J2
C500
J16
+
SEC-J1
L3
BAR CODE
To Lower Backplane in
Cascaded System
LED28 HB-LED
7 I2C#4
J21 U30
MH9
24 U34
4
3 2 1 SAS CODE
SEC-SDB
J19
1 4
C501 +
C495
ACT-LED
U27 SECONDARY EXPANDER
TEST
+
J17
JP1
MH3 U16
C499
+
+
C500
J16
+
L3
BAR CODE
I2C#0 DESIGNED IN USA
J20
PRI-J4
U22
BPN-SAS3-826EL1
MH6
4 3 2 1
REV:1.00 SAS CODE
U7
C501 +
PRI-J3
C494
1
+ +
U16
PRIMARY EXPANDER
U24
PRI-J2
1
C491
+
+
PRI-J1
Port A: Primary Expander Ports
I2C#0 DESIGNED IN USA
J20 PRI-J4
U22
BPN-SAS3-826EL1
MH6
4 3 2 1
REV:1.00 SAS CODE
U7
PRI-J3
C494
1
+ +
PRIMARY EXPANDER
PRI-J2
U24
1
C491
+
PRI-J1
From HBA#1 or
Higher Backplane
B-8
Port A Primary Expander 1
To Lower Backplane
in Cascaded System
PRI-SDB
+ C502
LED29 A
C J18 R97 A C C A
1 4 LED25 LED26
12V 5V
MH1 MH7
4
1
PRI-UART
J22
C492
C498 J*
+
J15
MH2
J14
J*
3
2
1
From HBA or
Higher Backplane
To Lower Backplane in
Cascaded System
PRI-SDB + C502
LED29 A
C J18 R97 A
A C C
1 4 LED25 LED26
12V 5V
4 MH1 MH7
1
PRI-UART
J22
C492 C498 J*
+
J15
MH2
J14
J*
3
2
1