New Release 5V0-22.21 VMware Specialist - vSAN 2021 Questions

When upgrading existing vSAN hosts with multiple SSD cache devices per host to NVMe devices, it is important to note that the disk group does not need to be removed before adding new cache. NVMe devices can be hot-plugged into the host, and vSAN will automatically detect and use the new devices as cache. It is important to check if the NVMe devices are supported by your version of vSAN and also check that the NVMe devices are on the VMware HCL.

This is explained in VMware vSAN documentation in the section "Upgrading vSAN Hardware" Reference:

The maximum time range that can be stored by the vSAN health check history is 180 days (C). According to the VMware Official Guide, “The vSAN Health Check history is stored for up to 180 days before it is automatically purged.”

vsantop is a command line utility that can be used to monitor the performance of a vSAN cluster in real-time. It provides detailed information about the performance of the vSAN cluster and its components, including disk usage, IOPS, network traffic, and object states. It can be used to identify the root cause of performance problems, such as disk contention, network congestion, or object failures. It provides a quick and easy way to identify the root cause of performance issues, making it a useful tool for troubleshooting vSAN clusters.

This is explained in VMware vSAN documentation in the section "vSAN Tools and Troubleshooting" Reference: