This table will help if you come from an HP or IBM shop and need an understanding of where the Dell OpenManage products map to the IBM or HP equivalents.

Bare Metal Installation Dell Systems Build and Update Utility (SBUU) IBM ServerGuide HP Smart Start
Lights out remote access Dell Remote Access Controller (DRAC) IBM Remote Supervisor Adapter (RSA) HP integrated Lights-Out (iLO)
One to One Mgmt - Browser Access OpenManage Server Administrator (OMSA) IBM Director Agent HP System Management Homepage (SMH)
One to Many Mgmt Dell IT Assistant (ITA) IBM Director HP Systems Insight Manager (SIM)