Fujitsu ETERNUS DX S5 Series Operation Manual (Basic page 61

4. Component Expansion/Function Enhancement
Installing Additional Drive Enclosures
15
Connect the DI (OUT) port of IOM#1 in the drive enclosure that is to be added to the DI (IN) port of IOM#1
in the drive enclosure that is nearest to the drive enclosure that is to be added with the mini SAS HD
cable between enclosures.
The following figure shows how a mini SAS HD cable between enclosures (DE and DE) is connected when
drive enclosure 2 is added.
The FAULT LED for the DI (IN) port to which the cable is to be connected and the FAULT LED for the DI
(OUT) port blink on and off.
Drive enclosure 2
(drive enclosure
Connect here
that is to be added)
Connect here
Drive enclosure 1
61 Operation Guide (Basic)