Supermicro SC847 JBOD User Manual page 108

SC847E1C/2C JBOD Chassis Manual
D-12 Failover
The BPN-SAS3-847EL2 model backplane has two expanders which enable effec-
tive failover and recovery.
Single Host Bus Adapter
In a single host bus configuration, the backplane connects to one host bus adapter.
Single Host Bus Adapter Failover
If the expander or data path in Port A fails, the system automatically switches to
Port B with application software or failover support.
Port A Expander 1
J25
1 2 3 EC14 1 10 P_JTAG
EC20
+
C76 +
+
MH11
TP30 C83
MH13 +
L3
+
C84
U14
EC19
EC13 +
+
MH12 MH14
PRI_WWN
P_UART
1 EC7
SMB
L6
J26 4 + J28
4
J27
P_SDB 1
C108 P_MDIO
EC16 J38
U16 EC24
+
+
C354 F1
+
MH10
+
C349
EC10 C342
+
C345
EC15 EC23
+ C344 +
U59
MH1
MH2
J29
PRI_I2C1
L7 3
S_UART 4 2 1
U32
S_SDB J36
J37
1 4
SEC_WWN 1 4
S_ICE
L12
C120 EC22
+
EC18 U17 C119 +
U60 C373
+
MH8
+ U52
EC9
+
U39
PWR5
MH7
J39 F14
1 2
EC17
PWR1 EC21
+ +
8
9
S_MDIO
R564
Port B Expander 2
Figure D-7: Single HBA
Port A Expander 1
J25
1 2 3 EC14 1 10 P_JTAG C91
EC20
+
C76 +
+
MH11
TP30 C83
MH13 +
L3
+
C84
U14
EC19
EC13 +
+
MH12 MH14
PRI_WWN
P_UART
1 EC7
SMB
L6
J26 4 + J28
4
J27
P_SDB 1
C108 P_MDIO
EC16 J38
U16 EC24
+
+
C354 F1
+
MH10
+
C349
EC10 C342
+
C345
EC15 EC23
+ C344 +
U59
MH1
MH2
J29
PRI_I2C1
L7 3
S_UART 4 2 1
U32
S_SDB J36
J37
1 4
SEC_WWN 1 4
S_ICE
L12 J34
2 20
C120 EC22
+
EC18 U17 C119 +
U60 C373 19
+
MH8
U52
+
EC9
+
U39
PWR5
MH7
CT1
J39 F14
1 2
EC17
PWR1 EC21
+ +
8
9
S_MDIO
R564
Port B Expander 2
Figure D-8: Single HBA Failover
C102 TP31 J24 P_ICE
2 20
C91
+
EC3 U1
L5 MH15 PRI
19 BPN-SAS3-847EL2
REV:1.00
D21
J23
C A EC4
PRI_J3
P_HB_LED DESIGNED IN USA
+
J49
U2 MH16
J22
U3
PRI_J2
PRI
J21
EC2
+
PRI_J1
HS2 J50
BAR CODE
J20
Y1
PRI_J0
EC1
11 2
12 24
+
U9
13 23
U7
MH3
SEC
EC8
+
J51 J33
SEC_J3
D22
A U47
C HS1
J34
2 20
J32
19
SEC_J2
SEC
SEC_J1
J31
J52
CT1
R447
U53
J30
SEC_J0
+
EC6
R459
Y2
1
U54 J35 10
+
S_JTAG EC5
SAS HBA
C102 TP31 J24 P_ICE
2 20
+
EC3 U1
L5 MH15 PRI MH17
19 BPN-SAS3-847EL2
REV:1.00
D21
J23
C A EC4
PRI_J3
P_HB_LED DESIGNED IN USA
+
J49
U2 MH16
J22
U3
PRI_J2
PRI
J21
EC2
+
PRI_J1
HS2 J50
BAR CODE
J20
Y1
PRI_J0
EC1
11 2
12 24
+
U9
13 23
U7
MH3
SEC
MH4
EC8
+ PWR3
J51 J33
SEC_J3
D22
A U47
C HS1
J32
SEC_J2
SEC C254
SEC_J1
J31
J52
R447
U53
J30
SEC_J0
+
EC6
R459 PWR2
Y2
1
U54 J35 10
+
S_JTAG EC5
D-12
SAS HBA
MH17
MH4 MH5 MH6
PWR3
U46
C254
U18 C262
EC12 C263 C264
+ C265
MH9
EC11
+
PWR2
MH5 MH6
U46
U18 C262
EC12 C263 C264
+ C265
MH9
EC11
+