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SC846 Chassis Manual
C-9 Dual Port and Cascading Configurations
The following section contains cascading configurations for the SC846EL1 and
SC846EL2 backplanes.
C-10 Single and Dual Port Expanders
Single Ports
SAS-846EL1 backplanes have a single-port expander that access all twenty-four
drives and supports cascading.
Dual Ports
SAS-846EL2 backplanes have dual-port expanders that access all twenty-four
drives. These dual-port expanders support cascading, failover, and multipath.
Port B
Secondary Ports
Expander 2
To lower backplane in
cascaded system
Figure C-4: SAS-846EL2 Dual Port Configuration
Figure C-5: SAS-846EL1 Single Port Configuration
From HBA or higher
backplane
J2
J1
Port A
Primary Ports
Expander 1
J2
J0
To lower backplane in
cascaded system
Port A
Primary Ports
Expander 1
J2
To lower backplane in
cascaded system
C-10
From HBA or higher
backplane
J1
J0
PRI_FLASH1
From HBA or higher
backplane
J1
J0
PRI_FLASH1
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