Loosely coupled mass storage computer cluster

A redundant switch having n interruptible inputs, n interrupting inputs and n outputs comprising

• (n+1) switched systems, each switch system having at least two control inputs, a first input, a second input, a third input, and a fourth input, and a first output and a second output, each switched system being connected at its second output to an interrupting signal generator, an interrupting output of said associated signal generator being connected to the second input of said connected switched system,
• said switched systems being interconnected in a ring structure so that each switched system further has an interruptible input signal connected to the first input, the second input of a first neighbor switched system connected to the third input, and the interruptible input from the other neighbor switched system on the ring connected to the fourth input,
• each said switched system having switching circuitry responsive to said control inputs for switching any of its inputs to at least its first output, and for connecting either of its first and fourth inputs to its second output, and
• a control system providing said control inputs of said switched system.