Single Host Bus Adapter
In a single host bus configuration, the
backplane connects to one Host Bus
Adapter (HBA).
+
+
+
EC17
R4635
R4631
C300
+
EC
9
+
EC
8
+
EC
6
+
+
EC
5
+
EC
4
+
+
+
EC
28
EC
27
+
+
+
EC
24
+
EC
23
+
EC
22
EC
2
1
+
+
EC
2
+
EC
15
+
EC
14
+
EC
13
+
EC
12
EC
1
1
+
EC
1
0
+
+
L147
BUZZE
R1
+
BPN-SAS2-846EL2
FAN_MONITOR_DISABLE
REV 1.10
DESIGNED IN USA 1
1 1
CTLED1
1
ANFAIL_LED
_DISABLE
1 1
M
DI
O2
M
DI
O1
F1
FANFAIL1
A C
OVERHEATFAIL1
A C
12V_LED
A
C
5V_LED
A
C
C A
ACT25
T24
1
J26
C A
C367
C872
PRI
_M
O
D
E1
1
SEC_MOD
E1
3
SEC_M
ODE2
1
3
PRI_MODE
2
1
3
+
+
EC
19
C2972
C861
+
+
+
+
C2970
+
+
+
EC
34
UA
RT_
P
4
+
C8
64
+
+
1
8
EC
18
+
+
+
+
C870
+
++
+
+
C865
+
PRI_J
0
PRI_J
1
PRI_J
2
SEC_J1
SEC_J0
SEC_J
2
MH5
MH12
MH11
MH15
MH10
1
FAN1
4
PWR2
+12V GND GND +5V
1
FAN2
4 +12V GND GND +5V
4
1
1
8
J25
5
10
15
20
25
28
Y
E
K
R
A
E
A
H
5
10
15
20
25
28
Y
E
K
R
A
E
A
H
+12V GND
GND +5V
U5
1
2
U17
EX
PD
BG
1
1
4
EX
PD
BG
2
4
4
1
1
1
UAR
T
_S
U
330
PRI
_I
2C
BAR CO DE
+12V GND
GND +5V
PWR5
+12V GND
GND +5V
+12V GND
GND +5V
WWN
WWN
Appendix E: SAS2-846EL Backplane Specifications
E-11 Failover
The SAS2-846EL2 backplane has two expanders which allow effective failover.
+
+
+
EC17
R4635
R4631
C300
+
EC
9
+
EC
8
+
+
EX
PD
BG
2
EC
6
+
+
EC
5
+
EC
4
+
+
+
EC
28
EC
27
+
+
+
EC
24
+
EC
23
+
EC
22
EC
2
1
+
+
EC
2
+
EC
15
+
EC
14
+
EC
13
+
EC
12
EC
1
1
+
EC
1
0
+
+
L147
BUZZE
R1
+
BPN-SAS2-846EL2
FAN_MONITOR_DISABLE
REV 1.10
DESIGNED IN USA 1
1 1
CTLED1
1
ANFAIL_LED
_DISABLE
1 1
M
DI
O2
M
DI
O1
F1
FANFAIL1
A C
OVERHEATFAIL1
A C
12V_LED
A
C
5V_LED
A
C
C A
ACT25
T24
1
J26
C A
C367
C872
PRI
_M
O
D
E1
1
SEC_MOD
E1
3
SEC_M
ODE2
1
3
PRI_MODE
2
1
3
+
+
EC
19
C2972
C861
+
+
+
C2970
+
+
+
EC
34
UA
RT_
P
4
+
C8
64
+
+
1
8
EC
18
+
+
+
C870
+
+
++
+
+
C865
+
PRI_J
0
PRI_J
1
PRI_J
2
SEC_J1
SEC_J0
SEC_J
2
MH5
MH12
MH11
MH15
MH10
1
FAN1
4
PWR2
+12V GND GND +5V
1
FAN2
4 +12V GND GND +5V
4
1
1
8
J25
5
10
15
20
25
28
Y
E
K
R
A
E
A
H
5
10
15
20
25
28
Y
E
K
R
A
E
A
H
+12V GND
GND +5V
U5
1
2
U17
EX
PD
BG
1
1
4
4
4
1
1
1
UAR
T
_S
U
330
PRI
_I
2C
BAR CO DE
+12V GND
GND +5V
PWR5
+12V GND
GND +5V
+12V GND
GND +5V
WWN
WWN
SAS HBA
SAS HBA
Secondary ports Primary ports
Expander 2
Expander 1
Primary ports
Expander 1
Primary ports
Expander 1
Primary ports
Expander 1
Secondary ports
Expander 2
Secondary ports
Expander 2
Secondary ports
Expander 2
Single Host Bus Adapter
Failover
If the expander or data path in the
primary ports fails, the system automati-
cally switches to secondary ports.
+
+
+
EC17
L153
L1
R4635
FANFAIL1
A C
TFAIL1
A C
C300
EC
9
+
+
EC
8
+
+
+
EC
5
EC
4
+
+
EC
3
+
EC
29
+
EC
28
EC
27
+
+
+
+
EC
23
+
+
+
EC
2
+
EC
15
+
EC
14
+
EC
13
+
EC
12
+
EC
1
0
+
EC
34
UA
RT_
P
4
+
+
+
1
+
1
4
EC
1
L147
BUZZE
R1
+
BPN-SAS2-846EL2
REV 1.10
MH9
DESIGNED IN USA 1
1
1
TLED1
BUZZER_ENB1
FAN_MONITOR_DISABLE
1
AIL_LED_D
ISABLE
1 1
M
DI
O1
M
DI
O2
12V_LED
A
C
5V_LED
A
C
C
A
1
J26
C A
ACT24
C367
C872
PRI
_M
O
D
E1
1
SEC_M
ODE1
3
SEC_M
ODE2
1
3
1
3
+
+
EC
19
+
+
+
+
C2970
+
+
+
+
+
+
+
C870
C869
+
++
+
+
+
C862
PRI_J
0
PRI_J
1
PRI_J
2
MH6
SEC_J1
SEC_J0
SEC_J
2
MH1
MH5
MH8
MH14
MH12
MH11
1
FAN1
4
+12V GND GND +5V
+12V GND GND +5V
1
FAN2
4 +12V GND GND +5V
4
1
1
8
1
8
5
10
15
20
25
28
Y
E
R
K
A
E
A
H
5
10
15
20
25
28
Y
E
R
K
A
E
A
H
1
2
J27
U17
EX
PD
BG
2
UAR
T
_S
4
4
1
1
U
330
PRI
_I
2C
BAR CO DE
+12V GND
GND +5V
PWR6
PWR
4
PWR5
+12V GND
GND +5V
PWR
2
+12V GND
GND +5V
WWN
WWN
+
E-11
+
+
EC17
L153
L1
R4635
FANFAIL1
A C
MH14
A C
FANFAIL_LED_DISABLE
PRI_J0
C300
EC
9
+
+
EC
8
+
+
+
EC
4
+
+
EC
3
+
EC
29
+
EC
28
EC
27
+
+
EC
2
1
+
+
+
+
+
EC
2
+
+
EC
14
+
EC
13
+
EC
12
+
+
EC
34
A
RT_
P
4
+
+
+
1
+
1
4
EC
1
BUZZE
R1
+
DESIGNED IN USA 1
1 1
TLED1
BPN-SAS2-846EL2
BUZZER_ENB1
FAN_MONITOR_DISABLE
REV 1.10
1
1 1
M
DI
O1
M
DI
O2
12V_LED
A
C
5V_LED
A
C
C
A
1 C
A
ACT24
C367
C872
PRI
_M
O
D
E1
1
SEC_M
ODE1
3
SEC_M
ODE2
1
3
1
3
+
+
EC
19
+
+
+
+
C2970
+
C2926
+
+
+
+
+
C870
C869
+
+
C867
++
+
+
+
C862
MH8
PRI_J
1
PRI_J
2
MH6
SEC_J1
SEC_J0
SEC_J
2
MH1
MH5
MH12
MH11
MH9
1
FAN1
4
+12V GND GND +5V
+12V GND GND +5V
+12V GND GND +5V
1 4 +12V GND GND +5V
4
1
1
8
J25
1
8
5
10
15
20
25
28
Y
E
K
R
A
E
A
H
5
10
15
20
25
28
Y
E
K
R
A
E
A
H
1
2
J27
EX
PD
BG
2
UAR
T
_S
4
4
1
1
U
330
PRI
_I
2C
BAR CO DE
+12V GND GND +5V
PWR6
PWR4
PWR3
PWR1
+12V GND
GND +5V
WWN
WWN
SAS HBA
SAS HBA
SAS HBA
SAS HBA
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.
Figure E-5: Failover Configurations
Содержание SC826E16-R1200B
Страница 9: ...SC846 Chassis Manual viii Notes ...
Страница 33: ...xxx Chassis User s Manual Notes 2 20 ...
Страница 63: ...SC846 Chassis Manual Notes 4 26 ...
Страница 73: ...SC846 Chassis Manual Notes 5 10 ...