Supermicro SC826BE1C-R920LPB User Manual page 105

E-13 Failover with RAID Cards and Multiple HBAs
The BPN-SAS2-826EL backplane may be configured for failover with multiple HBAs
using either RAID controllers or HBAs to acheive failover protection.
RAID Controllers: If RAID controllers are used, then the failover is accomplished
through port failover on the same RAID card.
HBAs: If multiple HBAs are used to achieve failover protection and load balancing,
Linux MPIO software must be installed and correctly configured to perform
the load balancing and failover tasks.
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 Port
A fails, the system will automatically
fail over to Port B. This maintains a
full connection to all drives.
Figure E-7. Failover with RAID Cards and Multiple HBAs
IMPORTANT: For RAID controllers, redundancy is achieved through port failover.
For multiple HBAs MPIO software is required to achieve failover protection.
Appendix E: SAS2-826EL Backplane Specifications
SAS HBA
SAS HBA
4 Q9 1
UART_S1 4 1
EC19
1 BC518 JP1 BUZZER_ENB1
EXPDBG2 1 SEC_MODE2
C265 C365 Y2 SEC_MODE1
C352
C366
AB
J19
PWR1
R187
AA
MH7
F1
EC18 +5V +12V +5V
GND GND GND GND 4
+12V 1
PWR2 PWR3 FAN1
C
A
Port B
Expander 2
SAS HBA
SAS HBA
4
UART_S1 Q9 4 1
EC19 1
1 BC518
JP1 BUZZER_ENB1
EXPDBG2
1 SEC_MODE2
SEC_MODE1
C265 C365 Y2
C366
J19 AB
PWR1
R187
AA
MH7
F1
EC18 +5V +12V +5V
GND GND GND GND 4
+12V 1
PWR2 PWR3 FAN1
C
A
Expander 2
E-11
1
A C 1 Q4 PRI_MODE2
ACTLED1 PRI_MODE1
1 OVERHEATFAIL1
3
PRI_I2C1
3
1
C353 MDIO2
EC11 1
SEC_J1
C362
SAS CODE
C130
WWN
MH8
FANFAIL_LED_DISABLE
EC13
DESIGNED IN USA
EC12
1 1 A
FAN_MONITOR_DISABLE C
FANFAIL1
EC14 SEC_J0
J18
1
8
8
1
FAN2
C367 4
BPN-SAS2-826EL2
1
EC8 A
REV 1.01 C
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 SPECIFIED DIMENSIONS
ARE IN INCHES
DESINGER: Teddy/Ben TOLERANCES
DESIGNED BY SUPERMICRO U.S.A.
DECIMAL ANGLE
www.supermicro.com DATE: 2009.12.15 REV: 1.00
X .1 30
XX .03 MACH FINISH
SAN JOSE,CA 95131 XXX .010
TEL:408-503-8000 FAX:408-503-8008 PROJECT NAME: BPN-SAS2-826EL2
1
A
C 1 Q4 PRI_MODE2
1 OVERHEATFAIL1 ACTLED1 PRI_MODE1
3
PRI_I2C1
1 3
C352 C353 MDIO2
EC11 1
SEC_J1
C362 SAS CODE
C130
WWN
MH8
FANFAIL_LED_DISABLE
EC13
DESIGNED IN USA
EC12
1 1 A
FAN_MONITOR_DISABLE C
FANFAIL1
EC14 SEC_J0
J18
1
8
8
1
FAN2
C367 4
BPN-SAS2-826EL2
1
EC8
REV 1.01
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: Teddy/Ben
DESIGNED BY SUPERMICRO U.S.A. TOLERANCES
www.supermicro.com DATE: 2009.12.15 REV: 1.00 DECIMAL ANGLE
Port B X .1 30
XX .03 MACH FINISH
SAN JOSE,CA 95131
PROJECT NAME: BPN-SAS2-826EL2 XXX .010
TEL:408-503-8000 FAX:408-503-8008
MH5 MH6
1 4
C120 MH4 C133 4 2
1 WWN
UART_P1
EXPDBG1
1
C C
EC10 J16
A A
PRI_J1
EC7
C119
C134
PRI_J0
MH9
EC9
C72
C121
BAR CODE
BC8
Port A
Expander 1
MH5
MH6
1 4
C120 MH4 4 2
C133
UART_P1 1 WWN
EXPDBG1
1
J16 C C
EC10
A
A
PRI_J1
EC7
C119
C134
PRI_J0
MH9
EC9
C72
C121
BAR CODE
BC8
A
C
Port A
Expander 1