Method and apparatus for using a serial cable as a cluster quorum device

Abstract

A method for obtaining a quorum vote by a first node using a quorum cable, wherein the quorum cable comprises a first end connected to the first node and a second end connected to a second node, including determining whether the quorum cable is reserved by the second node using a remote reservation input (RRI) on the first end, if the quorum cable is not reserved by the second node asserting a local reservation input (LRI) on the first end by the first node, monitoring a local reservation output (LRO) on the first end by the first node to determine whether the LRO on the first end is asserted in response to asserting the LRI on the first end, and obtaining the quorum vote by the first node, if the LRO on the first end is asserted.

Dependencies are inferred from the claim text.