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- #Windows shadow copy space requirements Patch
- #Windows shadow copy space requirements full
- #Windows shadow copy space requirements pro
#Windows shadow copy space requirements Patch
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#Windows shadow copy space requirements full
These are then assembled into the full file at the point in time that the backup was run.įor example, if a database consists of 100 blocks. When reading the files to be backed up, the unchanged blocks can be read from the original file, and the original versions of the changed blocks can be read from the Shadow Copy Storage Area. After a backup is initiated, Copy On Write copies any blocks that are to be changed in the original files to the Shadow Copy Storage Area. When running a backup using VSS, the “Copy On Write” method is used. For example, a 50 GB database would require 50 GB of Shadow Copy Storage Area. It is often asked “how much space do you need for a VSS backup?” An incorrect assumption is that a 1:1 ratio is required. The disk space required within the Shadow Copy Storage Area causes confusion. However, whether this schedule is enabled or not, the Shadow Copy Storage Area disk space is used when backing up using VSS. This functionality can be run on a schedule in Windows. Volume Shadow Copies can be used as a way of retaining multiple related versions of files. Note: The term “database” is used in this article, but applies to SQL Server databases and Exchange databases, and other VSS enabled applications.
#Windows shadow copy space requirements pro
VSS is often misunderstood, and this guide seeks to explain how VSS works with Attix5 Pro and in general. Microsoft VSS – short for Volume ShadowCopy Storage – is used by Attix5 Pro when backing up open files to BackupVault.