Server maintenance related

How to Backup/Restore a Windows 2003 Domain Controller

Need to defragment Windows Server disk offline?
Probably the closest yet still practical approach is boot-time defragmentation

Server disk defragmentation softwares:
UltraDefrag
+ free
* review: [Windows] Improve your computer’s performance by defragging with UltraDefrag
Puran Utilities
+ free
Auslogics Disk Defrag
- Pro version that supports boot-time defrag isn't free

What about defrag from boot CD?
Programs that try to defrag your Windows drive without using the Windows API are the most risky. These generally rely on a boot CD that runs its own OS. Programs that perform the defrag while you are working in Windows do not fall into this category.
(source: Before You Defragment Your PC)

Bad experience(s) regarding server disk defragmentation:
Be very careful with your servers, I defragged one overnight once and had a hell of a cleanup job the next morning. It still worked but crazy errors all over the place and services not starting etc.
(source: Server Defrag Software Recommendation?)

Yesterday I used PerfectDisk 11 Pro to defrag all my drives (like I do every month or two) and this was the first time the 3TB drive had been defragged. Upon rebooting from that overnight task, I discovered that my 3TB HDD is now listed as RAW instead of NTFS in Windows 7 Disk Management. It still has a drive letter assigned to it, but trying to open it gets the error ...
(source: How to recover lost partition on GPT drive?)