OSIsoft Inc., a provider of realtime performance management software, has released a high-availability (HA) PI system – a significant update to its data historian platform. By ensuring better-synchronized data distribution and information accessibility during system maintenance, the new version meets the needs of organizations that, more than ever before, depend on the availability of operational data. The PI range of solutions allows rapid and informed decision-making and better use of information adapted to various industries. This is an essential element in the operational strategy of industry leaders in the oil and gas sector, where timely data access is critical to firms’ success. Even in a simple configuration, unavoidable conditions may trigger data loss or render data inaccessible. In addition, lack of data during a maintenance period may be unacceptable for the end user who depends on timely access to that data at all times. Unplanned downtime represents another potential source of data loss, but the HA release ensures that data will always be gathered, stored and available to everyone across the organization. Current OSIsoft customers can easily upgrade from PI to PI HA, thus optimizing existing processes and infrastructures to achieve their business objectives.Features:•PI server replication – Redundant PI servers including a primary and one or more secondary servers, together referred to as a “collective.”•Interfaces – All interfaces will write time-series data directly to members of the collective, buffering data temporarily for those unable to receive it for a period of time and assuring that time-series data stored in each archive is an exact duplicate of the others.•Fail-over – Changes to the PI interface design to accommodate HA include the ability to have a pair of PI interface nodes connected to a PI server or to the collective. If the primary interface node fails to deliver data to the PI servers, it will fail-over to the secondary PI interface to run in “hot” standby mode. PI interfaces can now be started without a connection to the PI server.
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