You can perform an unattended upgrade by using either the CD-ROM or the downloaded installation package.
Scenario 1
You are installing from a CD inserted into the CD-ROM drive on E:\. Enter the following at the command-line interface:
E:\setup.exe /v"REINSTALLMODE=vomus REINSTALL=ALL /qb"
Scenario 2
You are upgrading from the installation package downloaded to C:\NetApp\downloads\. Enter the following at the command-line interface:
C:\NetApp\downloads\SME6.0.exe /v"REINSTALLMODE=vomus REINSTALL=ALL /qb"