User`s manual

C-11
Appendix C: SAS-836EL Backplane Specications
PRI_J0
PRI_J1
PRI_J2
SEC_J0 SEC_J1
SEC_J2
J2
J2
J1
Port B
Secondary Ports
Expander 2
From HBA or higher
backplane
To lower backplane in
cascaded system
To lower backplane in
cascaded system
Port A
Primary Ports
Expander 1
From HBA or higher
backplane
J0
J0 J1
C-8 Single and Dual Port Expanders
Single Ports
SAS-836EL1 backplanes have a single-port expander that access all sixteen drives
and supports cascading.
Dual Ports
SAS-836EL2 backplanes have dual-port expanders that access all sixteen drives.
These dual-port expanders support cascading, failover, and recovery.
Dual Port and Cascading Congurations
PRI_J0
PRI_J1
PRI_J2
SEC_J0 SEC_J1
SEC_J2
J2
J1
J0
Port A
Primary Ports
From HBA or higher
backplane
To lower backplane in
cascaded system
Figure C-6: SAS-836EL2 Dual Port Conguration
Figure C-7: SAS-836EL1 Single Port Conguration