[SASAG] Uncompress NTFS Volume

Kurt Buff kurt.buff at gmail.com
Sun Sep 27 12:23:50 PDT 2009


On Sun, Sep 27, 2009 at 11:44, Nick Webb <webbn at acm.org> wrote:
> I'm not quite sure how this happened, but on one of our File Servers a
> 2 TB volume is set "Compress this drive to save disk space" (Windows
> 2008 64-bit).  I really want to un-check that box, but am scared of
> bad things happening.  Has anyone ever had a compressed drive,
> especially something in the range of 2TB, and uncompressed it without
> problems?  I know it may crawl for a day, but other than that?
>
> I read somewhere that Windows will set the drive to compress when disk
> space runs very low, so that's perhaps what happened.  I did verify
> that the uncompressed file size is much smaller than the available
> space, so from that perspective we are good (350GB free).
>
> Thanks,
> Nick

Unless things have changed radically since Win2k3, you should be fine.

However, you might also take a conservative approach, and start by
uncompressing piecewise, a few subdirectories at a time, and see what
happens to your disk space and the performance of the machine.

Kurt



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