Metric groups
So far, we have covered the concepts of compute, storage, and network monitoring. Now we are ready to dive into the counters. The counters are accessible via GUI from these three tools: esxtop, vCenter, and vRealize Operations.
They serve different purposes, as follows:
esxtop: It operates at an individual host level, providing the deepest and most granular detail. It can go down to a granularity of 2 seconds. This is useful when you already know which ESXi host and VM you want to troubleshoot. This book does not cover the counters in esxtop.
vCenter Server: It complements esxtop by providing a view across hosts and other objects in vSphere. However, its granularity is at an interval of 20 seconds.
vRealize Operations: It complements vCenter by extending the coverage beyond vSphere. It can go up to the application level or down to the physical infrastructure. It also allows you to slice and dice the combined data. However, its default granularity is at an interval of 5 minutes...
