RPM Package on ESXi 4.1

Hello,

I'd like to install the package hpsmh-6.2.1-14.x86_64.rpm from

http://h20000.www2.hp.com/bizsupport/TechSupport/SoftwareDescription.jsp?lang=it&cc=it&prodTypeId=15351&prodSeriesId=3454575&prodNameId=3562405&swEnvOID=4091&swLang=8&mode=2&taskId=135&swItem=MTX-d752ad6a8cb44bebafae8cf8de

that is the download page of the drivers for HP proliant servers.

In the installation instructions is written:

Installation:

Download the rpm package to a directory on your hard drive and change to that directory.

Type rpm -ivh hpsmh-< version >.x86_64.rpm to install.

The problem is that the RPM is not present on my ESXi installation. I tried to use ipkg but the error was:

/vmfs/volumes/4c895c80-e7b9fb9a-751b-00237dd0c11a/INST/PATCH # ipkg install hpsmh-6.2.1-14.x86_64.rpm

ipkg: invalid magic

Any suggestion?

Thank you in advance,

Davide