List VS Trend View in vROPs

Recently I was approached by a customer looking for a question that they are capturing a specific metrics (VirtualDisk: Aggregate of all Instance | Commands Per Seconds) using vROps view in their environment. Now they wanted to understand how different are the values in terms of using a view List vs Trend and which one to use in which situation.

So here are the requirement to create two different views for same metrics :

(i) View Type: List

Metric: VirtualDisk: Aggregate of all Instance | Commands Per Seconds

Transformation: Maximum

Roll up : 5 Minutes

(ii) View Type: Trend

Metric: VirtualDisk: Aggregate of all Instance | Commands Per Seconds

Data Series: Historical Data

Roll Up: 5 Minutes

Let’s start first with View = List: In this scenario vROps will capture the metrics value after each wait Cycle (i.e. 5 min) and stores it against the Virtual Disk metrics. The catch here is that whatever duration you have selected vROps will show the Maximum value during that interval of time and displays it in front of VM or Virtual disk (shown in below screenshot).

I have created a View to collect required metrics and then presenting it in vSphere Objects (for past 7 days) – here you can clearly see (3rd screenshot) that the value showing against each virtual disk or VM is the highest value of selected metrics for that duration of time. If you change the time range the value will also differ

vrops_001vrops_002

[List-ing Max metric value of selected time range]

vrops_003

View = Trend: In this scenario vROps will capture the metrics data after every Wait cycle (i.e. 5 min) and stores the information in HIS (Historical Database). Leveraging vROps dynamic threshold property we can visualize the trend graph for selected interval of time . Which also means that vROps will run Analytics on this metrics and determine the future forecast as well –resulting into information as how long can I run my environment Efficiently with this growth.

I have used same metrics to create Trend analysis and as you can see that it is giving much more information to me for the same metrics which isn’t available in List view.

vrops_004vrops_005

[Trend-ing metric value of selected time range]

vrops_006

Now the real question – which view is best suited and when to use it..?

So the answer is purely dependent on the kind of information customer are keen to look for. Both the views may give different information (metric value) because of their representation of the information.

However from my perspective I’ll use List view when I need to gather instant information for a specific metrics to check Peak Utilization but if I need to understand the behavior of the same metrics then Trend view will give me better insights

With this I end this blog…. I hope it helps… till then Happy Reading… 🙂

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