I’ve recently written a post about how to collect data with esxtop and resxtop, but how do you interpret that data? esxtop is a great tool for troubleshooting and determining…
ESXi has an embedded SNMP agent which allows the host to send SNMP traps and receive requests. In the examples here I will use vicfg-snmp from a vMA to configure SNMP on my…
You can use the vscsiStats tool to gather storage performance data for VMFS and NFS datastores. The tool is now available on a default install of ESXi, and is located…
ESXTOP and RESXTOP are tools used to monitor and gather performance data from an ESXi host. Esxtop is a command-line tool that gives real-time information about resource usage in a vSphere…
This is all covered in the vSphere Storage Guide which I will aim to summarise here. ESXi uses storage APIs known as the Pluggable Storage Architecture (PSA) to manage storage…
Details on the path selection policies can be found in the vSphere Storage Guide, but are summarised below: The three default path selection policies (PSPs) are: MRU (Most Recently Used).…
There are a number of VMFS filesystem related tasks you can run using vmkfstools. Query a VMFS Volume You can get information on a VMFS volume by running the following…
First of all, what is a slot size? The Host Failures Cluster Tolerates admission control policy uses the slot size calculation to determine how many virtual machines can be powered…
There are a few ways to troubleshoot network/VLAN configuration from a command line, using tools such as ESXCLI and vicfg/esxcfg either locally on the ESXi host or remotely using vCLI…