KB ID : 61
Products :
Published : Dec. 29, 2015
Created : Dec. 29, 2015
Last Modified : April 8, 2016

Cause

During a backup, VSS creates a volume shadow copy to facilitate the transfer of data to the backup server. Storing the data for that volume shadow copy requires free space on the disk.

Solution

For volumes less than 500 megabytes, the minimum is 50 megabytes of free space. For volumes more than 500 megabytes, the minimum is 320 megabytes of free space. It is recommended that at least 1 gigabyte of free disk space to be available on each volume, if the volume size is more than 1 gigabyte.

You can determine the shadow storage configuration by running the command:

vssadmin list shadowstorage

Pay more attention to the value of the Maximum shadow copy storage space.

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