I tried going to Services, but couldn't find the Service "Disk Defragmenter".
My installation of Windows Server 2008 R2 is brand new, and I'm thinking could it be I didn't install a specific Role, or Feature that would enable the Disk Defragmenter service?
I could do a manual defragmentation using Start > Accessories > System Tools > Disk Defragmenter. But I couldn't find that service..
Any more ideas?
A default installation of R2 has the Disk Defragmenter service with no roles or features installed. Are you sure that is Server 2008 R2 and not Server 2008? There's a difference.