User`s manual

C-9
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-10 Single/Dual Ports and Cascading Congurations
The following sections contain information on single and dual ports and on cascading
congurations.
C-11 Single and Dual Port Expanders
Single Ports
SAS-836EL1 backplanes have a single-port expander that accesses all sixteen
drives and supports cascading.
Dual Ports
SAS-836EL2 backplanes have dual-port expanders that accesses all sixteen drives.
These dual-port expanders support cascading, failover, and recovery.
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-7: SAS-836EL2 Dual Port Conguration
Figure C-8: SAS-836EL1 Single Port Conguration