There is a Dormant SIVA Cluster to be found in Server Farm. They can be collected during Wrath of the Machine.
Dormant SIVA Cluster: Server Farm[edit]
Proceed forward, after the Siege Engine, looking at the pillars on the right.
Go past the 3 panels on your left and immediately look down over the railing. You will see a very dimly lit beam below you. Drop down onto it and look back the way you came.
You will see the final cluster in front of you. This can cause you to die.
There is a small railing underneath the cluster that you can jump on to.