User`s manual

D-9
Safety Information and Technical Specifications
JP13
GNDGND +12V
+5V
GNDGND
+12V
+5V
GNDGND
+12V
+5V
REV 1.00
SAS826EL
J0
From HBA or higher
backplane
To Lower Backplane in
cascaded system
SAS 826EL1 Single-Port Backplane
D-8 Single and Dual Port Expanders
Single Ports
SC 826EL1 backplanes have a single-port expander that access all 12 drives and
supports cascading.
Dual Ports
SC 826EL2 backplanes have dual-port expanders that access all 12 drives. These
dual-port expanders support cascading, failover, and recovery.
Warning: The SAS 826EL2 backplane's J0 and J1 SAS ports reversed in the Sec
-
ondary Expander Ports B with J0 on top and J1 on the bottom.
Dual Port and Cascading Configurations
SAS 826EL2 Dual-Port Backplane
J1
J1
J0
From HBA or higher
backplane
To Lower Backplane in
cascaded system
JP13
GNDGND +12V
+5V
GNDGND
+12V
+5V
GNDGND
+12V
+5V
REV 1.00
SAS826EL
J0
J1
From HBA or higher
backplane
To Lower Backplane in
cascaded system
Port B
Secondary Ports
Expander 2
Port A
Primary Ports
Expander 1