Dell OpenManage Offline Bundle and VIB for ESXi

OMSA 6.5
http://www.dell.com/support/drivers/us/en/555/DriverDetails/DriverFileFormats?c=us&l=en&s=&cs=555&DriverId=R300511

OMSA 7.0
http://www.dell.com/support/drivers/us/en/555/DriverDetails/DriverFileFormats?DriverId=VPTVV&FileId=2922404090&productCode=poweredge-r720&urlProductCode=False

It can be installed with VMware Update Manager (VUM) or with CLI.
VUM is preferred, simpler and more convenient option.

CLI installation:
vihostupdate.pl -server -i -b OM-SrvAdmin-Dell-Web-6.3.0-2075.VIBESX41i_A00.8.zip

vicfg-advcfg --server --username --password --set 1 UserVars.CIMoemProviderEnabled

For example:
vicfg-advcfg --server 10.10.1.72 --set 1 UserVars.CIMoemProviderEnabled

Note:
in ESX5 advanced parameter changed to UserVars.CIMvmw_OpenManageProviderEnabled