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Dell EMC Avamar for Windows Servers 19.7 User Guide

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Installing Windows updates for VSS issues

About this task

Backup files from VSS snapshots sometimes contain corrupted files when the size of the volume in the backup is a multiple of 8 GB on one of the following operating systems:
  • Windows Server 2008
  • Windows Server 2008 R2
  • Windows 7
  • Windows Vista

Steps

  1. Install the Microsoft hotfix at https://support.microsoft.com/kb/2748349.
  2. Rename the file cache from C:\Program Files\avs\var\f_cache.dat to C:\Program Files\avs\var\backup_f_cache.dat.
  3. Run the next scheduled backup so that you have a good VSS snapshot.
    The backup may take longer to complete because you removed the file cache and the backup must process all files on the system.

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