Supermicro SC846BE1C-R1K28B User Manual page 131

D-11 Failover
The SAS2-846EL2 backplane has two expanders which allow effective failover.
Single Host Bus Adapter
In a single host bus configuration, the
backplane connects to one Host Bus
Adapter (HBA).
Single Host Bus Adapter
Failover
If the expander or data path in the
primary ports fails, the system automati-
cally switches to secondary ports.
Dual Host Bus Adapter
In a dual host bus configuration, the
backplane connects to two host bus
adapters.
Dual Host Bus Adapter
Failover
If the expander or data path in the
primary ports fails, the system auto-
matically switches to the secondary
ports. This maintains a full connection
to all drives.
Appendix D: SAS2-846EL Backplane Specifications
Figure D-5: Failover Configurations
D-11
SAS HBA
BPN-SAS2-846EL2
BUZZER_ENB1 FAN_MONITOR_DISABLE
REV 1.10 MH9 MH6
DESIGNED IN USA 1 1 ACTLED1 SEC_J1 SEC_J0
1 SEC_J2
BUZZER1
MH12
L147
1 1
EC17
L1
C367 C872 BAR CODE
J25
C867
WWN
SEC_MODE2
C870
MH11
1 3
MH1
U17
C A
ACT25
C869
J27
PWR5
+12V GND GND +5V +12V GND GND +5V
FAN3 4
1
GND GND +5V
+12V
PWR6
U5 PWR4
MH15 MH2 MH4
S S S S S S S S S S S S S S S S S S
UPER UPER UPER UPER UPER UPER UPER UPER UPER UPER UPER UPER UPER UPER UPER UPER UPER UPER R R R R R R R R R R R SILKSCREEN
Secondary ports UNLESS OTHERWISE
PRIMARY-SIDE SPECIFIED DIMENSIONS
ARE IN INCHES
DESINGER: Shen Ping TOLERANCES
DESIGNED BY SUPERMICRO U.S.A.
www.supermicro.com DECIMAL ANGLE
DATE: 2010.04.15 REV: 1.10 X .1 30
SAN JOSE,CA 95131 XX .03 MACH FINISH
PROJECT NAME: BPN-SAS2-846EL2 XXX .010
TEL:408-503-8000 FAX:408-503-8008
Expander 2
SAS HBA
BPN-SAS2-846EL2
FAN_MONITOR_DISABLE
REV 1.10 BUZZER_ENB1
MH9 MH6
DESIGNED IN USA 1 1
1 ACTLED1 SEC_J2 SEC_J1 SEC_J0
BUZZER1
MH12
L147
1 1
EC17
L1
C367 C872
BAR CODE
J25
C867
WWN
SEC_MODE2
C870
MH11
1 3
MH1
U17
C A
ACT25
C869
J27
PWR5
+5V +12V GND GND +5V
+12V GND GND FAN3 4
1
+12V GND GND +5V
U5 PWR6 PWR4
MH15 MH2 MH4
S S S S S S S S S S S S S S S S S S
SILKSCREEN Secondary ports
UPER UPER UPER UPER UPER UPER UPER UPER UPER UPER UPER UPER UPER UPER UPER UPER UPER UPER R R R R R R R R R R R UNLESS OTHERWISE
PRIMARY-SIDE SPECIFIED DIMENSIONS
ARE IN INCHES
DESINGER: Shen Ping
DESIGNED BY SUPERMICRO U.S.A. TOLERANCES
www.supermicro.com DATE: 2010.04.15 REV: 1.10 DECIMAL ANGLE
X .1 30
XX .03 MACH FINISH
SAN JOSE,CA 95131 PROJECT NAME: BPN-SAS2-846EL2 XXX .010
TEL:408-503-8000 FAX:408-503-8008
Expander 2
SAS HBA
SAS HBA
BPN-SAS2-846EL2
BUZZER_ENB1 FAN_MONITOR_DISABLE
REV 1.10 MH9
DESIGNED IN USA 1 1
1 ACTLED1 SEC_J2 SEC_J1
BUZZER1
MH12
L147
1 1
EC17
L1
C367 C872 BAR CODE
J25
C867
WWN
SEC_MODE2
C870
MH11 1 3
MH1
U17
C A
ACT25
C869
J27
PWR5
+12V GND GND +5V +12V GND GND +5V
FAN3 4
1
GND GND
+12V +5V
U5 PWR6 PWR4
MH15
MH2
S S S S S S S S S S S S S S S S S S
SILKSCREEN
UPER UPER UPER UPER UPER UPER UPER UPER UPER UPER UPER UPER UPER UPER UPER UPER UPER UPER R R R R R R R R R R R UNLESS OTHERWISE
PRIMARY-SIDE Secondary ports SPECIFIED DIMENSIONS
ARE IN INCHES
DESINGER: Shen Ping
DESIGNED BY SUPERMICRO U.S.A. TOLERANCES
DECIMAL ANGLE
www.supermicro.com DATE: 2010.04.15 REV: 1.10
X .1 30
SAN JOSE,CA 95131 XX .03 MACH FINISH
PROJECT NAME: BPN-SAS2-846EL2 XXX .010
TEL:408-503-8000 FAX:408-503-8008
Expander 2
SAS HBA
SAS HBA
BPN-SAS2-846EL2
FAN_MONITOR_DISABLE
REV 1.10 BUZZER_ENB1
MH9
DESIGNED IN USA 1 1
1 ACTLED1 SEC_J2 SEC_J1
BUZZER1
MH12
L147
1 1
EC17
L1
C367 C872
BAR CODE
J25
C867
WWN
SEC_MODE2
C870
MH11
1 3
MH1
U17
C A
ACT25
C869
J27
PWR5
+12V GND GND +5V
+12V GND GND +5V FAN3 4
1
+12V GND GND +5V
PWR6 PWR4
U5
MH15 MH2
Secondary ports
S S S S S S S S S S S S S S S S S S
UPER UPER UPER UPER UPER UPER UPER UPER UPER UPER UPER UPER UPER UPER UPER UPER UPER UPER R R R R R R R R R R R SILKSCREEN
UNLESS OTHERWISE
PRIMARY-SIDE SPECIFIED DIMENSIONS
ARE IN INCHES
DESINGER: Shen Ping
DESIGNED BY SUPERMICRO U.S.A. TOLERANCES
www.supermicro.com DATE: 2010.04.15 REV: 1.10 DECIMAL ANGLE
X .1 30
XX .03 MACH FINISH
SAN JOSE,CA 95131 XXX .010
TEL:408-503-8000 FAX:408-503-8008 PROJECT NAME: BPN-SAS2-846EL2
Expander 2
R4635 R4631
MH8 FANFAIL1 A C OVERHEATFAIL1 MH14
A
C FANFAIL_LED_DISABLE
PRI_J2 PRI_J1 PRI_J0
WWN
J24
C2926
C865 MH7
MH10
PRI_MODE2
1 3
MH5
C300
SEC_MODE1
3
12V_LED
A C
5V_LED 1 J26
A C C A
ACT24
L153
1 1
4 4
PWR2
1
+12V GND GND +5V 1 FAN2 4 +12V GND GND +5V +12V GND GND +5V
1 FAN1 4
PWR3 PWR1
MH3 MH13
F1
Primary ports
Expander 1
R4631
R4635
MH8 FANFAIL1 A C OVERHEATFAIL1 MH14
A C FANFAIL_LED_DISABLE
PRI_J0
PRI_J2 PRI_J1
WWN
J24
C2926
MH7
C865
MH10
PRI_MODE2
1
3
MH5
C300
SEC_MODE1
3
12V_LED
A C
5V_LED
A C 1 J26 C A
ACT24
L153
1 1
4
4
PWR2
1
+12V GND 1 FAN2 4 +12V GND GND +5V
GND +5V +12V GND GND +5V
1 FAN1 4
PWR3 PWR1
MH3
MH13
F1
Primary ports
Expander 1
R4635 R4631
MH6 OVERHEATFAIL1
MH8 FANFAIL1 A C
A C FANFAIL_LED_DISABLE
SEC_J0 PRI_J0
PRI_J2 PRI_J1
WWN
J24
C2926
C865
MH10
PRI_MODE2
1 3
MH5
C300
SEC_MODE1
3
12V_LED
A C
5V_LED
A C 1 J26
L153
1 1
4 4
PWR2
1
+12V GND GND +5V 1 FAN2 4 +12V GND +5V +12V GND GND +5V
GND
1 FAN1 4
PWR3 PWR1
MH4 MH3
F1
Primary ports
Expander 1
R4631
R4635
MH6 MH8 FANFAIL1 A C OVERHEATFAIL1
A C FANFAIL_LED_DISABLE
SEC_J0 PRI_J0
PRI_J2 PRI_J1
WWN
J24
C2926
C865
MH10
PRI_MODE2
1
3
MH5
C300
SEC_MODE1
3
12V_LED
A C
5V_LED
A 1 J26
C
L153
1 1
4 4
PWR2
1
+12V 1 FAN2 4 GND
GND GND +5V +12V GND GND +5V +12V GND +5V
1 FAN1 4
PWR3 PWR1
MH3
MH4
F1
Primary ports
Expander 1
MH14
MH7
C A
ACT24
MH13
MH14
MH7
C A
ACT24
MH13