troubleshooting Question

Reinstalling ESXi OS on top of existing installation

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mamelasFlag for Greece asked on
Operating SystemsInstallationVMware
7 Comments1 Solution17 ViewsLast Modified:
Dear Sirs,

We are facing performance issues in one of our ESXi 6.5 U1 Hosts.

I was told by VMware Support to perform a re-installation of ESXi OS on top
of the existing ESXi installation and monitor the Host's behavior.

The installation Windows of ESXi provide us 3 options:
- "Upgrade-preserve VMFS "
- "Install-preserve VMFS"
- "Install-overwrite VMFS"

In order to perform a "Clean" installation, I would select the option "Install-overwrite VMFS"
Host's VMFS is empty since we are using Shared Storage to Host the VMs.

My concern is, If the VMFS is overwritten will it lose the Network configuration, IP, and any other configuration related to the vCenter?
Or all this information is saved into vCenter?
Will the Host lose the connection to vCenter and HA configuration?

Thank you in advance,
Seth Simmons
Lead Systems Administrator
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