In this chapter, you learned about the FC storage stack in a vSphere environment. You also came to understand how to use the vCenter and vRealize operations manager, and how to troubleshoot the FC storage problem. The difference between these two tools is that vCenter gives the static metrics and confirms the problem that we need for analysis. vRealize has the smart engine, which will analyze the metrics itself and show us the root cause. So what is a very useful tool?

In the next chapter, you will learn how to troubleshoot the vSphere ISCSI storage.

Here are some metrics available with common thresholds that can be referred to, in order to troubleshoot any storage problems.

If the virtual disk read latency or write latency is more than 15 ms or 20 ms, then this will impact the performance of the VM. If the device's kernel disk command latency is more than 1 ms or the physical device command latency is more than 15 ms or 20 ms, then the host or array will face a base issue.