I suggest that you create a small partition (no more than 50GB) for Windows when installing it...then create stoarge partitions after the install is complete.
Windows on any partition larger than 50-60GB is just not very smart. The smaller the Windows partition, the smoother Windows tools (chkdsk /r, defrag, etc.) will function when called upon.
A chkdsk /r on a 2TB drive takes me slightly over 2.5 hours, but it doesn't inconvenience me because my 2TB drive is used for nothing but storage, while my Win 7 partition is 60GB, with 41 unused right now.
It's always wise, IMO, to partition these super-large hard drives, whjether Windows is stored on one or not...because all system housekeeping can be done much more efficiently and risk of data loss due to partition/drive problems...is somewhat lessened via partitioning. If you have a single huge partition and you develop file system or hard drive problems...you may lose everything (including backups) because it's all on one partition.
There is no advantage to installing Windows on gigantic partitions.