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Historical Data Compression and Formatting

Question asked by NicPickering on Oct 26, 2018
Latest reply on Oct 26, 2018 by André Åsheim

Hi All,

I was wondering if anyone could share some information about how PI Historian processes and stores historical data? I'm currently working with a data set that has at least 15 years of historical data. I need to collect and process this entire history and was wondering what the best way to do this was?

  • How does the PI system compress this data?
  • What is the formatting of compressed data?
  • Is there a way to decompress this data? * (apologies if this is a silly question)


Any help would be greatly appreciated.