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Question on netflow compression settings

I see in the NetFlowGlobalSettings table there are a number of settings and I am not sure how things work. The three settings, CollapseEnabled 1, 2,3. CollapseEnabled1 appears to say that after 15 minutes, data is summerized into hourly. However, the CollapseTrigger2InHours seems to mean that hourly is summerized in 24 hrs. Can someone explain how and when data is compressed?

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Accepted answers

pacetti

FYI:

This information is available in the Solarwinds Knowledge Base and in "Getting Started - Configuring Orion NTA Settings - Configuring NetFlow Data Compression" in the SolarWinds Orion NetFlow Traffic Analyzer Administrator Guide.

All comments

AllisonB

Jeremiah, which version of Orion NTA are you running?

The online help for the current version of NTA doesn't refer to "collapse" in the Global Settings.

http://www.solarwinds.com/NetPerfMon/SolarWinds/wwhelp/wwhimpl/js/html/wwhelp.htm#href=OrionNetFlowPHSettingsGlobal.htm

jeremiahmcclain

I am looking at the NetPerfMon db. The manual is vague as to what those settings mean, so I am looking for clarification.

FormerMember

1. We keep as-received data for the setting of “Uncompressed data”

2. We roll up as-received data form 1 min segments to 15 minute segments each 15 minutes and put it to NetFlowSummary1 table

3. We then roll up 15 minute segments every X hours to hourly data

NetFlowSummary1 - This table holds the summarized historical data for the first collapse level. The data are collapsed and moved to the NetFlowSummary2 table after certain number of hours. The data in this table summarizes a 24 hours traffic by default. (CollapseTrigger2InHours option in NetFlowGlobalSettings = 24)

NetFlowSummary2 - This table holds the summarized historical data for the second collapse level. The data are collapsed and moved to the NetFlowSummary3 table after certain number of days. The data in this table summarizes a 3 days traffic by default. (CollapseTrigger3InDays option in NetFlowGlobalSettings = 3)

NetFlowSummary3 - This table holds the summarized historical data for the third collapse level. The data are deleted after certain number of days. The data in this table summarizes a 30 days traffic by default. (RetainCompressedDataInDays option in NetFlowGlobalSettings = 30)

jeremiahmcclain

Thank you Denny, that is exactly what I needed.

patriot

Denny,

Is it the Details tables in the database that roll into the NetFlowSummary1 table?