A hospital was upgrading its records to a digital form. In the process, it was also moving from manual processes in the emergency room to automated online processes. Since this information was extremely vital and could not be unavailable for even minutes, the IT department proposed a solution that would address this need. In the proposed system, a secondary server would take over the primary one automatically the second the primary server goes down for any reason. This required the two servers to be in coordination at all times. Which solution is the IT department proposing?
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