![]() Now, click the “Add” button and select the batch file that we created in the previous step. “F” gives the specified account full access to the folder and its children.įor more information on these parameters, see the Microsoft Technet article at ![]() In case you are wondering, OI is the acronym for “object inherit” and “CI” is for container inherit. Icacls ” X:\SQLData” /grant Domain\Username:(OI)(CI)Fīe sure to change “X:\SQLData” to your actual ephemeral drive folder structure and also change “Domain\Username” to the service account that you are using to run SQL Server. Here we will create a new batch file which contains the following text: Now you should be faced with a windows explorer window that points to “C:\Windows\System32\GroupPolicy\Machine\Scripts\Startup”. Now you’ll want to double-click the “Startup” item on the right-hand side of the group policy editor to add the startup script. Next you’ll want to navigate to Local Computer Policy -> Computer Configuration -> Windows Settings -> Scripts (Startup/Shutdown) Launch the Local Group Policy editor by clicking Start and typing gpedit.msc in the Start Search box, and then pressing ENTER. We’ll do that with local Group Policy, but don’t worry – it’s pretty straight forward. In order for SQL Server to start successfully, we’ll want to ensure that the folder structure is re-created at system startup and that the security is replaced so that the SLQ Server service account can read, write and create in this folder. Recreate the folder structure at startup: If you do, your SQL Server installation will almost definitely fail. ![]() When the ephemeral drive is wiped (before each system startup) the folder structure will quite obviously be lost and SQL Server won’t re-create this folder for you – but please don’t take the bait and just use the root of the drive for tempdb files. Something basic like “X:\SQLData” works quite well. Be sure to put the tempdb files into a folder structure. When freshly installing SQL Server, you’ll want to point the tempdb files at this ephemeral drive. Its speed makes it a very compelling option for SQL Server tempdb files and with a few pointers – it’s actually quite a viable and well performing option: Simply put this is a local (typically SSD) disk that can be used for temporary storage and is routinely “re-formatted” when your server either reboots or is power cycled. In a virtualized environment, especially with many of the industry leaders in cloud IaaS, you’ll have an ephemeral drive available. It’s used by a whole world of straight forward read-only queries as well making tempdb a potential bottleneck for even you most simple of uses. SQL Server loves to use tempdb and believe it or not it’s not relegated solely to the types of queries you might think, such as ordering and grouping. First of all, if you are not familiar with ephemeral storage, then check out our previous post on the topic.
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