![]() Because of this, a different approach is needed in order to monitor the instance, as if a problem with the fileshare occurs, the SQL Server service may not become offline, depending of what the fileshare is being used for. In the image above, you can see that no disks are assigned to the SQL Server role, so the disks are not controlled to the Failover Cluster. ![]() In case you define the shown configuration for a clustered instance, this is what you’re going to see in your SQL Server role, in the Failover Cluster Manager: ![]() Notice that this is valid for clustered and non clustered instances. You just specify the shares that you want to use, instead of the common paths, a warning message will be shown and that’s it! If the right permissions are set, the installation will succeed. For example, you can define this during the installation process: To make this “magic” happen, you have a few options. Moreover, the SQL Server engine and SQL Server agent service accounts should have FULL CONTROL share permissions and NTFS permissions on the SMB share folders, otherwise we will be frustrated with a not awesome error message □ Supported Universal Naming Convention (UNC): In order to use this capability, we need to specify the file path using the Universal Naming Convention (UNC), as the bellow examples: However, remember that this is not supported on SQL Server 2008! You can check more details on this KB. The list above showed improvements since the Windows Server 2008, but SQL Server 2008, and versions before, are not officially supporting the use of fileshares.Īnyway, you can enable this possibility by activating the trace flag “1807”, by running the “DBCC TRACEON(1807)” command. Since SQL Server 2012, not only the user databases are supported, but also the system databases can be placed in SMB fileshares. Store a database in a fileshare is supported since SQL Server 2008 R2, although only user databases could be stored on fileshares. The list of improvements above has only one improvement per version, as I selected the most important ones for this article, anyway more things were improved. Observing the improvements, we can clearly notice that the official support of a network-attached storage is being drawn since Windows Server 2008. MTU is turned on by default, which significantly enhances performance in large sequential transfers like SQL Server data warehouse and database backup or restore.Īs you can notice, at this moment (January 2015) the current version of SMB is 3.02, the one associated to the Windows Server 2012 R2, also the current version of Windows Server. ![]() Support for transparent failover of file shares providing zero downtime. Significant performance improvements, specifically for SQL OLTP style workloads. As an example, here is a list of some of those improvements:ĭurability, which helps recover from temporary network glitches. The fileshare we are talking about has the Service Message Block (SMB) network protocol supporting it, which had an evolution on its latest versions looking to achieve a better reliability and performance. In this article, we will talk about one of these options, which is also an option for standalone instances by the way: The network-attached storage – SMB Fileshare.Īt first view, this looks weird and not a good option but, in fact, Microsoft worked to make this happen. On the latest versions of SQL Server new possibilities to assign storage to a clustered instance became available. In this article we will check how to implement this solution. Do you know that you can store system and user databases in a fileshare? Even for a clustered instance this is an option now. ![]()
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