Static thresholds are user-defined thresholds that you manually configure for use at different times of the day or week depending on the workload in your environment.
You use predefined static threshold values in the following scenarios:
- You have a well-defined service-level objective which clearly establishes the performance goals.
For example, if you have a service-level agreement with the customer to support online transactions at a response time of less than 1 second for a business-critical application, then you can create a User resource threshold profile to establish the response time and other performance requirements for the application, and then assign the target resources for monitoring. If there is an SLO violation, the system sends a critical alert or a warning and notifies the user before the problem becomes serious. You can also generate a report that compares the actual response time of the business-critical application to the SLO and see if your objectives are in compliance, then take necessary measures to fix the problem.
- You can assess the workload patterns in your environment and know what values to assign.
For example, define the threshold for a system resource based on the architecture of the storage system. If the storage system is VSP G1000, then the recommended MPB (MP Blade) usage is under 60%.