I would have needed to own the drive to tell you it's ratings, but I can tell you that it may vary slightly because of other components and vary more due to any RAID system it is in. I don't pay attention to windows rating myself because it really doesn't tell you as much about the device as it should and because I don't have it on most of my machines. Neither windows server operating systems nor XP have it, Vista sucks, and windows 7 is too expensive.
32 bit windows server copies are free to college students and both 32bit and 64 bit servers are free to use if you are willing to reinstall every year and a half or so. These two facts mean I have legally free windows on my computers