Hello. You should Write Cache on all of your installed Hard Disks.
Explanation:[quote=", post:, topic:"]
Although write caching can help to increase the speed of a computer, if a power outage occurs before the data waiting in the cache memory has had a chance to be written to the hard drive's disks, the data on the hard drive can become corrupt. This is like handing your secretary that important paper, but then she gets distracted and forgets to put it back in the filing cabinet. Later, when you go to look for the paper, it is not where you expect it to be.
When a power outage occurs while write caching is enabled, file inconsistencies can result and the operating system can become corrupt. Resulting symptoms can range from odd error messages being displayed, the computer freezing up, the computer not being able to boot again, and blue screen of death error messages being displayed.
This option can cause data loss in case of power fluctuations. Which is common here nowadays. Its better to prevent than to treat.
Read about it here how to disable: http://support.microsoft.com/kb/259716
This is true for any OS: