•Microsoft Windows Storage Server 2008 R2 Service Pack 1

Is there a separate service pack for Storage Server 2008 R2, or can the standard Windows 2008 R2 SP1 be down loaded and applied. If there is a separate SP1 can someone provide a link to the down load The OEM is HP, they have a new SR out that requires Microsoft Windows Storage Server 2008 R2 Service Pack 1.

Thanks!