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SC836B JBOD Chassis Manual
B-5 Single and Dual Port Configurations
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-SAS3-836EL1 backplanes have a single port expander that accesses all of
the drives and supports cascading.
Secondary Expander
Not Present on EL1 Models
MH1
SEC-J4
S_ICE_HDR
J37
20
2
EC16
CG3
CG1
SEC_J3
1
19
L12
CG2
SEC-J3
CG1
SEC_J2
CG3
SEC-J2
CG2
MH2
EC15
CG3
CG1
BAR CODE
SEC_J1
CG2
SEC-J1
CG3
CG1
EC13
EC14
SEC_J0
CG2
S_HB_LED
S_SDB
A
C
4
J36
1
J35
4
S_UART
1
26
25
20
15
4
H
E
A
H
E
A
1
4
1
PWR3
PWR4
1
1
2
5
5
J29
MH3
U48
1
9
S_MDIO
1 2
3
Figure 3EL-5. BPN-SAS3-836EL1 Single Port Configuration
Dual Ports
BPN-SAS3-836EL2 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
MH1
S_ICE_HDR
J37
2
20
EC16
CG3
SEC-J4
SEC_J3
19
1
L12
CG2
SEC-J3
SEC_J2
CG3
CG2
EC15
SEC-J2
CG3
BAR CODE
SEC_J1
CG2
CG3
SEC-J1
EC13
EC14
SEC_J0
CG2
S_HB_LED
S_SDB
A
C
J36
1
J35
S_UART
1
1
4
1
PWR3
PWR4
2
J29
MH3
1
S_MDIO
1 2
3
From HBA#2 or
Higher Backplane
Figure 3EL-6. BPN-SAS3-836EL2 Dual Port Configuration
MH13
EC19
EC20
L10
L7
2
4
SMB
1
3
J17
A
C
SECONDARY EXPANDER
2
4
1
EC17
1
3
PRI_I2C1
WWN
MH7
L6
HS1
AF
AE
Y
R
K
Y2
PWR2
E
A
10
5
1
1
4
PWR1
10
1
J34
S_JTAG
MH9
MH12
1
4
To Lower Backplane in
Cascaded System
MH13
CG1
EC19
EC20
L10
CG1
2
4
SMB
1
3
J17
MH2
SECONDARY EXPANDER
2
4
EC17
1
3
CG1
PRI_I2C1
WWN
HS1
AF
CG1
AE
Y
R
K
4
4
Y2
E
A
26
25
20
15
10
5
1
4
H
E
A
H
E
A
1
1
1
J34
S_JTAG
5
5
MH12
U48
9
MH5
P_SDB
L2
ACTLED1
1
J24
4
1
J19
P_UART
P_HB_LED
D21
1
4
L4
A
C
EC1
EC2
PRI-J4
L5
L3
EC3
EC4
J28
2
20
P_ICE_HDR
1
C21
MH11
HS2
26
25
EC12
EC11
20
U1
15
PRI-J1
10
H
E
A
H
E
A
5
1
1
LT3
5
5
LT4
1
A
E
K
R
Y
AE
AF
U8
2
8
P_MDIO
9
L1
J27
1
J18
1
Y1
P_JTAG
10
Port A: Primary Expander Ports
MH5
P_SDB
ACTLED1
1
J24
1
J19
P_UART
P_HB_LED
4
D21
1
4
A
C
EC1
EC2
L7
A
C
EC3
EC4
J28
1
2
20
P_ICE_HDR
MH7
L6
1
C21
26
25
EC12
EC11
20
U1
15
PWR2
10
H
E
A
H
E
A
5
1
1
LT3
1
4
5
5
1
PWR1
A
E
U8
10
P_MDIO
2
8
9
MH9
J27
1
1
4
J18
1
P_JTAG
From HBA#1 or
Higher Backplane
B-8
Port A Primary Expander 1
To Lower Backplane
in Cascaded System
MH6
MH4
1 2 3
C A
C
A
5V_LED1
12V_LED1
BPN-SAS3-836EL2
EC10
EC9
REV 1.01
CG3
CG1
DESIGNED IN USA
PRI_J3
CG2
PRI-J3
P_MDIO
CG3
CG1
EC7
EC8
WWN
MH8
PRI_J2
CG2
PRI-J2
CG3
CG1
PRI_J1
CG2
CG1
CG3
PRI_J0
CG2
MH10
EC6
EC5
From HBA or
Higher Backplane
To Lower Backplane in
Cascaded System
MH6
1 2 3
L2
A
C A
C
5V_LED1
12V_LED1
L4
BPN-SAS3-836EL2
EC10
EC9
REV 1.01
PRI-J4
CG3
CG1
DESIGNED IN USA
L5
L3
PRI_J3
CG2
PRI-J3
P_MDIO
CG3
CG1
EC7
EC8
WWN
PRI_J2
CG2
MH11
HS2
CG3
CG1
PRI-J2
PRI_J1
CG2
CG3
CG1
PRI-J1
LT4
K
R
Y
AE
AF
PRI_J0
CG2
EC6
EC5
L1
Y1
10
MH4
MH8
MH10
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