Agreed. Windows Server 2003 appears to be the main tag and lines up with the actual product name.
Merged and synonymised.
updating post history, 22 rows affected (pipe delimited)
updating posts, 19 rows affected (pipe delimited)
updating PostTags associations, 19 rows affected
removing/renaming old tag, 0 rows affected
updating count for master tag, new count: 558
tag remapping of [windows-server-2003] and [windows-2003-server] complete!
remapping 0 synonyms
2 favorite and ignored tags remapped!
0 tracked tag badges were remapped!
Tag Synonym windows-2003-server -> windows-server-2003 was approved!
There was also a windows-2003 which I have merged into windows-server-2003