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Sunday, May 10, 2009

Reduce Shadow Copy Hard Drive Space

My personal favorite feature of windows Vista (Business, Enterprise, and Ultimate) is Shadow Copy. Shadow copy creates automatic incremental backups of your files and then allows you to view or restore back to those previous versions easily. Unfortunately, Shadow Copy also allocates a large portion of your hard drive for these back up versions and this can become a problem especially for desktop and laptop users with smaller hard drives. If you want to free up some of your hard drive that is dominated by Shadow Copy without completely disabling this great app simply follow these following steps.

  • Click Start and then go All Programs and select Accessories.

  • Right click on the Command Prompt and choose Run as Administrator.

  • Now run the command vssadmin list shadowstorage. If the command does not run successfully change directories to c:\windows\system32 (to change directories type cd then put a space and type the directory you want).

  • Now that you know what your maximum shadow copy storage space is you can reduce it (or if you want, inlarge it) by running the following command. Vssadmin resize shadowstorage /on=[ForVolumeSpec:] /for=[ForVolumeSpec:] /maxsize=[MaxSizeSpec] (of course you will need to put in your own info for everything in the [ ] brackets). For example if you wanted to make the max storage size of shadow copy on your C drive be 8 gigabytes you simply would type in the following: vssadmin resize shadowstorage /on=C: /for=C: /Maxsize=8GB

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