Ignacio Aguirre

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  1. 2 votes
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    0 comments  ·  PI Interfaces » PI Interface for OPC DA  ·  Flag idea as inappropriate…  ·  Admin →
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  2. 2 votes
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    0 comments  ·  PI Interfaces » PI Interface for OPC DA  ·  Flag idea as inappropriate…  ·  Admin →
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  3. 21 votes
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    TELL US MORE  ·  Joy Wang responded

    Please specify what kind of high availability is requested. For PI Integrator for BA to run in a highly available fashion?

    To support other applications that are highly available? If so, which ones?

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    Ignacio Aguirre commented  · 

    It might not be extremely necessary to have integrator level HA as it supports History Recovery. But it should be able to support SQL Backend HA.

    For the Integrator, a SQL Server Standard or SQL Server Enterprise is recommended.
    Most of the time this is a company SQL (non-only for PI purposes) which is built-in HA. This pushes our customers to acquire more SQL licenses.

    Ignacio Aguirre supported this idea  · 
  4. 23 votes
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    0 comments  ·  PI Interfaces » Other Interfaces  ·  Flag idea as inappropriate…  ·  Admin →
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  5. 5 votes
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    4 comments  ·  PI Server » Analytics & Calculations  ·  Flag idea as inappropriate…  ·  Admin →
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    Ignacio Aguirre commented  · 

    The problem here is that although you delete archived events through Recalculation (mode: RangeDelete), PI Buffer will preserve its own snapshot value in memory.

    If you have pibufss on the machine which you are sending data from, then pibufss is responsible for doing compression. PI Buffer Subsystem keeps the information about the most recent value it sent (i.e. local snapshot) and it performs compression only for events which has timestamp more recent than the local snapshot. So even if you delete all events on PIDA and from PIDA point of view events are coming in-order, from pibufss these events are out of order and won't be compressed (if they are older than the pibufss snapshot event).

    You can check buffer-local snapshot by running the command pibufss -sd ptid where ptid is the Point ID for the tag you are interested in.

  6. 88 votes
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    5 comments  ·  PI Connectors » OPC UA  ·  Flag idea as inappropriate…  ·  Admin →
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  7. 18 votes
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    0 comments  ·  PI Server » Notifications  ·  Flag idea as inappropriate…  ·  Admin →
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