Tech Support > Operating Systems > Windows 2000 > "The driver disabled the write cache on device \Device\Harddisk0\DR0. "
"The driver disabled the write cache on device \Device\Harddisk0\DR0. "
Posted by Majstor on October 2nd, 2003


Hello,

I get this message every time I restart server. Is this a serious problem?

Regards,
Vladimir


Posted by William R. Walsh on October 2nd, 2003


Hi!

No, in fact it is a VERY good thing that the driver is doing!

Enabling write caching allows a hard disk or other fixed storage volume to
signal a sucessful write and to store the data in a RAM cache as opposed to
writing it out onto the actual disk media. This does boost performance and
is a great theory, but bad things happen if a machine goes down or the disk
drive chokes when writing the data to the actual disk. Basically, the
failure tears a gaping hole in the file system...which will usually
obliterate quite a few files depending upon how much was in the write cache
at the point of failure.

I always turn it off on my systems...the risk isn't worth it.

William