Promise Technology VTrak J610S - Manual (Page 19)

Step 4: Setting Up Data Cable Connections
19
The arrangement requires J610s or J310s units with dual I/O modules and two
Host PCs with a SAS HBA card in each PC.
Connect the SAS HBA card in the first Host PC to the subtractive-routed port
(CN1) on a I/O module of the first J610s or J310s unit.
Connect the SAS HBA card in the second Host PC to the subtractive-routed port
(CN2) on the other I/O module of the first J610s or J310s unit.
Connect the table-routed ports (CN2) on the I/O modules of the first J610s or
J310s unit to the subtractive-routed ports (CN1) on the I/O modules of the next
J610s or J310s unit.
Connect the remaining J610s or J310s units in the same manner. You can mix
J610s and J310s units in the same cascade.
Use SFF-8088 to SFF-8088 SAS cables to connect the J610s or J310s units.