Process Portal B Historian trending slowly and only a few days of data retreivable

For the past few months the trends have been updating slowly and now there is no data shown past about 3-5 days, was able to trend up to 30 days and more before in some cases. Rebooting the historian server did nothing to help. The Server has been in service for about 6 years and has redundant raid drives.

C drive used space 113GB and free space 22.3GB

D drive used space 90.5 GB and free space 188 GB

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IanV Rank: 3246

Asked 1 year ago

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Can you open SQL and check the Historian_1 usage. is Archiving Enabled on any Hostorian Policies ? if it is and no Volumes are Mounted the Historian_1 SQL Database can fill up.

Regards,

Miro

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