Hi Prashant,

There are a number of installation options for ESX, could you advise on what version (v4?) you are installing and how many you wish to install so we can best advise to which option would be best?

Based on the forum you posted in (VMware ESX 4) I would guess the best option is a scripted installation. This can work with local media or over a network and provides you great flexability / repeatability.

Check out pages 27-45 in the following PDF: http://www.vmware.com/pdf/vsphere4/r40/vsp_40_esx_vc_installation_guide.pdf

Cheers,