After the installation finishes and you connect the first time with the vsphere client a message is displayed.
Esx 6 5 system logs on host are stored on non persistent storage.
After a reboot the log files disappear.
Browse to the host in the vsphere web client navigator.
For esxi 6 5 6 7 and higher the changes take effect immediately.
If the logs are stored on a local scratch disk vcenter will display an alert stating system logs on host xxx are stored on non persistent storage configure esxi syslog location vsphere web client.
Thus in case of any host issues you won t be able to examine its logs or provide any data to vmware technical support team.
The esx problem syslog nonpersistent warning means that the system writes logs scratch to the non persistent usb device and if you restart your host they won t be saved.
Click the manage tab then click settings.
This means that the log files are written on the sd card.
Click on edit and search for syslog global logdir.
When you are booting up an esxi host using a usb or sd card you might commonly get this system logs are stored on non persistent storage warning message on your esxi hosts.
Recently i had to install a few vmware esxi 5 5 host on removable sd cards.
Vcenter select host configure advance system settings.
I came across with this when i m implementing a cluster with dell power edge servers and hypervisor os was installed on the sd cards.
Verifying the location of system logs in vsphere web client.