Hiya,
I am afraid not - 3 nodes are needed for High Availability due to the need to have quorum.
We do not support having 2 nodes - that would give no high availability but would give you 2 points of failure so it would actually be worse than just having a single node. You need to have three nodes so that you avoid split-brain when one node goes down - this is industry standard practice for quorum.
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Chris Dudley
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