Disc caching warning in SBS 2008 Event Viewer

I see this error occasionally in the event log for a SBS 2008 machine:

The driver detected that the device \Device\Harddisk0\DR0 has its write cache enabled. Data corruption may occur.

Does this refer to the main drive in the system?  What is the resolution?

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Larry Struckmeyer MVPCommented:
Windows cannot tell if the controller has a battery installed that will keep the cache viable untill the contents can be written to disk in case of power failure.  If you have a good UPS on the system, OR, if the controller has an active battery installed, you can ignore the warning.
DaveWWWAuthor Commented:
Thanks very much.  I do have a UPS.
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