You don't need to load a driver for the PERC 6/i in Server 2008 or newer, as the driver is "native" to Windows.  If you think you need a driver, I suspect it is because you have tried to install and it doesn't find any disks.  If so, keep in mind that the PERC does NOT support non-RAID/JBOD, so you need to configure disks in a Virtual Disk (VD, RAID array) before they can be presented to the OS.  It can be configured in the CTRL-R utility (be sure to check the Advanced/Initialize boxes too).
Good Morning Community, I am trying to find the Dell 2950 Perc 6 /i Raid Adapter Device Driver for Windows 2008 R2 Standard OS. Thanks in advance for your help. Modem489
Dell 2950 Perc 6 /I Raid Adapter Device Driver