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Publishing Microsoft SQL Databases: Insufficient Free Space on the Mount Server

KB ID: 3049
Product: Veeam Backup & Replication | 9.5
Published: 2019-11-13
Last Modified: 2022-11-03
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Article Applicability

The locations and registry values specified in this article are relevant only to Veeam Backup & Replication 9.5 U4.

Starting with Veeam Backup & Replication 10, when a SQL Database is Published using Veeam Explorer for Microsoft SQL, the write cache files are stored in the write cache folder specified within the Mount Server settings of the repository where the backup files are stored.

Challenge

When publishing a Microsoft SQL database via Veeam Explorer for Microsoft SQL Server, the C drive (C:\) on the mount server is running out of space.

Cause

Veeam Explorer for Microsoft SQL Server saves cache to the C:\Windows\SysWOW64\config\systemprofile\AppData\Local directory folder located on the mount server. Such cache is used to keep changes that you might have made to the published database.

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Solution

Change the following registry key on the mount server:

Key path: HKEY_LOCAL_MACHINE\SOFTWARE\Veeam\Veeam Backup and Replication
Key: WriteCacheDirectory
Key type: REG_SZ

Consider the following:
  • Make sure the Key path exists.
  • The WriteCacheDirectory key must be specified without backslash ("\").
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