SUPER MICRO Computer SAS2-826EL Chapter 3 DualPortandCascadingCongurations

3-1
SAS2-826EL Series Backplane User's Guide
Q9
F1
FANFAIL1
AC
OVERHEATFAIL1
AC
5V_LED1
A
C
12V_LED1
A
C
ACT18
A
C
ACT17
A
C
+
C367
C366
C365
C353C352
+
C134
+
C133
+
C132
C121
C120
+
C119
+
EC19
R167
2
1
J16
J19
PRI_J1
PRI_J0
SEC_J0
SEC_J1
BC8
BC518
C157
C395
1
FANFAIL_LED_DISABLE
1
BUZZER_ENB1
1
MDIO1
MDIO2
1
ACTLED1
FAN_MONITOR_DISABLE
1
MH9
MH8
MH7
MH6
MH5
MH4
4
1
FAN1
4
FAN2
1
FAN3
1
8
J18
1
8
5
Y E
20
R K
10 15
AE
2528
AH
5
E
20
R K
10 15
AE
2528
AH
SEC_MODE1
13
1
SEC_MODE2
13
Y2 1
4
EXPDBG1
1
EXPDBG2
1
4
UART_S1 14
UART_P1
PRI_MODE1
PRI_MODE2
PRI_I2C1
Q4
R187
JP1
1
4
+
C408
BCA115
BCA121
C265
C72
R305
+
C128
+
+
C130
+
+
C362
+
EC6
+
+
EC10
+
EC11
EC12
+
EC13
+
EC14
+
+
+
EC18
+
EC7
+
EC8
+
EC9
+5V +12V
GND GND
PWR1
+5V
+12V
GNDGND
PWR2
+5V
+12V GNDGND
PWR3
SAS CODE
BAR CODE
1.00REV:
BPN-SAS2-826EL2
MACH FINISH
30
ANGLE
SPECIFIED DIMENSIONS
UNLESS OTHERWISE
XXX
XX
X
.010
.03
.1
TOLERANCES
DECIMAL
ARE IN INCHES
Teddy/BenDESINGER:
DATE:2009.12.15
PROJECT NAME:
SAN JOSE,CA 95131
DESIGNED BY SUPERMICRO U.S.A.
www.supermicro.com
TEL:408-503-8000 FAX:408-503-8008
SILKSCREEN
PRIMARY-SIDE
S UPER
R
S UPER S UPER S UPER S UPER S UPER S UPER S UPER S UPER S UPER S UPER S UPER S UPER S UPER S UPER S UPER S UPER S UPER
RRRRRRRRRR
WWN
WWN
AB
AA
DESIGNED IN USA
REV 1.01
BPN-SAS2-826EL2
J0
J1
Q9
F1
FANFAIL1
AC
OVERHEATFAIL1
AC
5V_LED1
A
C
12V_LED1
A
C
ACT18
A
C
ACT17
A
C
+
C367
C366
C365
C353C352
+
C134
+
C133
+
C132
C121
C120
+
C119
+
EC19
R167
2
1
J16
J19
PRI_J1
PRI_J0
SEC_J0
SEC_J1
BC8
BC518
C157
C395
1
FANFAIL_LED_DISABLE
1
BUZZER_ENB1
1
MDIO1
MDIO2
1
ACTLED1
FAN_MONITOR_DISABLE
1
MH9
MH8
MH7
MH6
MH5
MH4
4
1
FAN1
4
FAN2
1
FAN3
1
8
J18
1
8
5
Y E
20
R K
10 15
AE
2528
AH
5
E
20
R K
10 15
AE
2528
AH
SEC_MODE1
13
1
SEC_MODE2
13
Y2 1
4
EXPDBG1
1
EXPDBG2
1
4
UART_S1 14
UART_P1
PRI_MODE1
PRI_MODE2
PRI_I2C1
Q4
R187
JP1
1
4
+
C408
BCA115
BCA121
C265
C72
R305
+
C128
+
+
C130
+
+
C362
+
EC6
+
+
EC10
+
EC11
EC12
+
EC13
+
EC14
+
+
+
EC18
+
EC7
+
EC8
+
EC9
+5V +12V
GND GND
PWR1
+5V
+12V
GNDGND
PWR2
+5V
+12V GNDGND
PWR3
SAS CODE
BAR CODE
1.00REV:
BPN-SAS2-826EL2
MACH FINISH
30
ANGLE
SPECIFIED DIMENSIONS
UNLESS OTHERWISE
XXX
XX
X
.010
.03
.1
TOLERANCES
DECIMAL
ARE IN INCHES
Teddy/BenDESINGER:
DATE:2009.12.15
PROJECT NAME:
SAN JOSE,CA 95131
DESIGNED BY SUPERMICRO U.S.A.
www.supermicro.com
TEL:408-503-8000 FAX:408-503-8008
SILKSCREEN
PRIMARY-SIDE
S UPER
R
S UPER S UPER S UPER S UPER S UPER S UPER S UPER S UPER S UPER S UPER S UPER S UPER S UPER S UPER S UPER S UPER S UPER
RRRRRRRRRR
WWN
WWN
AB
AA
DESIGNED IN USA
REV 1.01
BPN-SAS2-826EL2
J0
From HBA or higher
backplane
To lower backplane in
cascaded system
SAS2-826EL1 Single-Port Backplane
Chapter 3
DualPortandCascadingCongurations
3-1 Single and Dual Port Expanders
Single Ports
SAS2-826EL1 backplanes have a single-port expander that accesses all drives
and supports cascading.
Dual Ports
SAS2-826EL2 backplanes have dual-port expanders that access all drives. These
dual-port expanders support cascading, failover, and recovery.
SAS2-826EL2 Dual-Port Backplane
J1
J0
J1
From HBA or higher
backplane
To lower backplane in
cascaded system
From HBA or higher
backplane
To lower backplane in
cascaded system
Port B
Secondary Ports
Expander 2
Port A
Primary Ports
Expander 1
Figure 3-1: Single and Dual Port Expanders