Skip to content
DataMiner DoJo

More results...

Generic selectors
Exact matches only
Search in title
Search in content
Post Type Selectors
Search in posts
Search in pages
Search in posts
Search in pages
Log in
Menu
  • Updates & Insights
  • Questions
  • Learning
    • E-learning Courses
    • Empower Replay: Limited Edition
    • Tutorials
    • Open Classroom Training
    • Certification
      • DataMiner Fundamentals
      • DataMiner Configurator
      • DataMiner Automation
      • Scripts & Connectors Developer: HTTP Basics
      • Scripts & Connectors Developer: SNMP Basics
      • Visual Overview – Level 1
      • Verify a certificate
    • Video Library
    • Books We Like
    • >> Go to DataMiner Docs
  • Expert Center
    • Solutions & Use Cases
      • Solutions
      • Use Case Library
    • Markets & Industries
      • Media production
      • Government & defense
      • Content distribution
      • Service providers
      • Partners
      • OSS/BSS
    • Agile
      • Agile Webspace
      • Everything Agile
        • The Agile Manifesto
        • Best Practices
        • Retro Recipes
      • Methodologies
        • The Scrum Framework
        • Kanban
        • Extreme Programming
      • Roles
        • The Product Owner
        • The Agile Coach
        • The Quality & UX Coach (QX)
    • DataMiner DevOps Professional Program
      • About the DevOps Program
      • DataMiner DevOps Support
  • Downloads
  • More
    • DataMiner Releases & Updates
    • Feature Suggestions
    • Climb the leaderboard!
    • Swag Shop
    • Contact
    • Global Feedback Survey
  • PARTNERS
    • All Partners
    • Technology Partners
    • Strategic Partner Program
    • Deal Registration
  • >> Go to dataminer.services

Alarm Template & Baseline: Delta Range VS High or Low

Solved1.36K views2nd December 2021absolute alarm template baseline relative
3
Alberto De Luca [DevOps Enabler]4.60K 26th November 2021 0 Comments

Hi Dojo,
Quick follow-up from the previous post on baselines in Alarm Templates.

When using the abolute/relative type for a given parameter threshold, I can still specify e.g. a major low or a major high: isn’t one of these redundant if the threshold is defined as a Delta-range (+-)?

According to the help, a Delta gets defined eiher as a percentage or in absolute, so I was expecting CUBE to grey-out one of the ranges (e.g. Low) when the other (High) has been used for a given parameter.

At present I can still add the same delta value both for the HIGH (+) or LOW (-) range.
Is the below interpretation correct?

Are the Hi & Lo Delta values expected to be different, e.g. sort of different deviation (or severity) in the low range?

Or can I simply define my DELTA just for the “High” range and ignore the “Low”?

I’m interested in applying a Gaussian distribution model to monitor some of the parameters, any steer will be helpful.

Thanks

Tobe Deprez [SLC] [DevOps Advocate] Answered question 29th November 2021

1 Answer

  • Active
  • Voted
  • Newest
  • Oldest
1
Tobe Deprez [SLC] [DevOps Advocate]894 Posted 29th November 2021 2 Comments

Both for absolute and relative thresholds, the high and low thresholds can be different. For instance, if I set the low and high warning thresholds as below, then a warning will be given if the parameter value is 1GB (= 1 000 000kB) higher than the current baseline value, or 5GB (= 5 000 000kB) lower than the current baseline value.

If the current baseline is 10GB (=10 000 000kB), then warnings will be given if the value is lower than 5GB, or higher than 11GB, as you can see on the picture below.

Relative thresholds, on the other hand, are calculated as relative differences with the current baseline value. For instance, if I set relative thresholds as below, then a warning will be given if the current parameter value is 50% lower, or 10% higher than the current baseline value.

With the same baseline as above, this would give warnings if the value is below 5GB (since 10GB – 50% of 10GB = 10GB – 5GB = 5GB), or higher than 12GB (since 10GB + 20% of 10GB =  10GB + 2GB = 12GB).

This also means that neither the absolute nor the relative alarm thresholds take into account the standard deviation, as in the Gaussian distribution model. However, if you happen to know the standard deviation (or are able to calculate or guess it), you could use absolute thresholds and use the standard deviation (σ) (respectively 2σ or 3σ) as lower and higher delta value for minor (resp. major and critical) alarms. This would then create minor (resp. major or critical) alarms if the value is higher than μ + σ (resp. μ + 2σ or μ + 3σ) or lower than μ – σ (resp. μ + 2σ or μ + 3σ). (Note that technically speaking, the smart baseline is calculated as the median and not the mean μ, however for a Gaussian distribution both coincide.)

Masschelein Karl [SLC] Posted new comment 30th November 2021
Alberto De Luca commented 29th November 2021

Thanks for this clarification, Tobe, appreciated
I’ll refer to “-Δ” for the “Low” threshold and to “+Δ” for the High threshold.

Any chance the +/- signs could also be added in the Alarm Template GUI?

Masschelein Karl [SLC] commented 30th November 2021

Hi,

Thanks for the suggestion Alberto.
The client development team has created a task for this small improvement request.

Kind regards,

Please login to be able to comment or post an answer.

My DevOps rank

DevOps Members get more insights on their profile page.

My user earnings

0 Dojo credits

Spend your credits in our swag shop.

0 Reputation points

Boost your reputation, climb the leaderboard.

Promo banner DataMiner DevOps Professiona Program
DataMiner Integration Studio (DIS)
Empower Katas
Privacy Policy • Terms & Conditions • Contact

© 2025 Skyline Communications. All rights reserved.

DOJO Q&A widget

Can't find what you need?

? Explore the Q&A DataMiner Docs