The installation media must be accessible to the system on which you are installing ESXi.

The following locations are supported for the installation media:

Local DVD

Local USB

USB CD/DVD drive. This is useful if you cannot burn a CD/DVD image or the host does not have a CD/DVD drive.

USB flash drive

Remote media (See Using Remote Management Applications).

Remote location (media depot), accessible by HTTP/HTTPS, FTP, or NFS