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                    <h1 id="invoke-dbabalancedatafiles">Invoke-DbaBalanceDataFiles</h1>
<table>
<thead>
<tr>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td><strong>Author</strong></td>
<td>Sander Stad (@sqlstad), sqlstad.nl</td>
</tr>
<tr>
<td><strong>Availability</strong></td>
<td>Windows, Linux, macOS</td>
</tr>
</tbody>
</table>
<p> </p>
<p>Want to see the source code for this command? Check out <a href="https://github.com/dataplat/dbatools/blob/master/public/Invoke-DbaBalanceDataFiles.ps1">Invoke-DbaBalanceDataFiles</a> on GitHub.
<br>
Want to see the Bill Of Health for this command? Check out <a href="https://dataplat.github.io/boh#Invoke-DbaBalanceDataFiles">Invoke-DbaBalanceDataFiles</a>.</p>
<h2 id="synopsis">Synopsis</h2>
<p>Re-balance data between data files</p>
<h2 id="description">Description</h2>
<p>When you have a large database with a single data file and add another file, SQL Server will only use the new file until it's about the same size.<br />
You may want to balance the data between all the data files.</p>
<p>The function will check the server version and edition to see if the it allows for online index rebuilds.<br />
If the server does support it, it will try to rebuild the index online.<br />
If the server doesn't support it, it will rebuild the index offline. Be carefull though, this can cause downtime</p>
<p>The tables must have a clustered index to be able to balance out the data.<br />
The function does NOT yet support heaps.</p>
<p>The function will also check if the file groups are subject to balance out.<br />
A file group would have at least have 2 data files and should be writable.<br />
If a table is within such a file group it will be subject for processing. If not the table will be skipped.</p>
<p>Note: this command does not perform a disk space check for non-Windows machines so make sure you have enough space on the disk.</p>
<h2 id="syntax">Syntax</h2>
<pre><code>Invoke-DbaBalanceDataFiles
    [-SqlCredential &lt;PSCredential&gt;]
    [-Database &lt;Object[]&gt;]
    [-Table &lt;Object[]&gt;]
    [-RebuildOffline]
    [-EnableException]
    [-Force]
    [-WhatIf]
    [-Confirm]
    [&lt;CommonParameters&gt;]

Invoke-DbaBalanceDataFiles -SqlInstance &lt;DbaInstanceParameter[]&gt;
    [-SqlCredential &lt;PSCredential&gt;]
    [-Database &lt;Object[]&gt;]
    [-Table &lt;Object[]&gt;]
    [-RebuildOffline]
    [-EnableException]
    [-Force]
    [-WhatIf]
    [-Confirm]
    [&lt;CommonParameters&gt;]

</code></pre>
<p> </p>
<h2 id="examples">Examples</h2>
<p> </p>
<h5 id="example-1">Example:  1</h5>
<pre><code>PS C:\&gt; Invoke-DbaBalanceDataFiles -SqlInstance sql1 -Database db1
</code></pre>
<p>This command will distribute the data in database db1 on instance sql1<br></p>
<h5 id="example-2">Example:  2</h5>
<pre><code>PS C:\&gt; Invoke-DbaBalanceDataFiles -SqlInstance sql1 -Database db1 | Select-Object -ExpandProperty DataFilesEnd
</code></pre>
<p>This command will distribute the data in database db1 on instance sql1<br></p>
<h5 id="example-3">Example:  3</h5>
<pre><code>PS C:\&gt; Invoke-DbaBalanceDataFiles -SqlInstance sql1 -Database db1 -Table table1,table2,table5
</code></pre>
<p>This command will distribute the data for only the tables table1,table2 and table5<br></p>
<h5 id="example-4">Example:  4</h5>
<pre><code>PS C:\&gt; Invoke-DbaBalanceDataFiles -SqlInstance sql1 -Database db1 -RebuildOffline
</code></pre>
<p>This command will consider the fact that there might be a SQL Server edition that does not support online rebuilds of indexes.<br>
By supplying this parameter you give permission to do the rebuilds offline if the edition does not support it.<br></p>
<h3 id="required-parameters">Required Parameters</h3>
<h5 id="sqlinstance">-SqlInstance</h5>
<p>The target SQL Server instance or instances. <br></p>
<table>
<thead>
<tr>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td>Alias</td>
<td></td>
</tr>
<tr>
<td>Required</td>
<td>True</td>
</tr>
<tr>
<td>Pipeline</td>
<td>false</td>
</tr>
<tr>
<td>Default Value</td>
<td></td>
</tr>
</tbody>
</table>
<h3 id="optional-parameters">Optional Parameters</h3>
<h5 id="sqlcredential">-SqlCredential</h5>
<p>Login to the target instance using alternative credentials. Accepts PowerShell credentials (Get-Credential).<br />
Windows Authentication, SQL Server Authentication, Active Directory - Password, and Active Directory - Integrated are all supported.<br />
For MFA support, please use Connect-DbaInstance.<br></p>
<table>
<thead>
<tr>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td>Alias</td>
<td></td>
</tr>
<tr>
<td>Required</td>
<td>False</td>
</tr>
<tr>
<td>Pipeline</td>
<td>false</td>
</tr>
<tr>
<td>Default Value</td>
<td></td>
</tr>
</tbody>
</table>
<h5 id="database">-Database</h5>
<p>The database(s) to process.<br></p>
<table>
<thead>
<tr>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td>Alias</td>
<td></td>
</tr>
<tr>
<td>Required</td>
<td>False</td>
</tr>
<tr>
<td>Pipeline</td>
<td>false</td>
</tr>
<tr>
<td>Default Value</td>
<td></td>
</tr>
</tbody>
</table>
<h5 id="table">-Table</h5>
<p>The tables(s) of the database to process. If unspecified, all tables will be processed.<br></p>
<table>
<thead>
<tr>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td>Alias</td>
<td>Tables</td>
</tr>
<tr>
<td>Required</td>
<td>False</td>
</tr>
<tr>
<td>Pipeline</td>
<td>false</td>
</tr>
<tr>
<td>Default Value</td>
<td></td>
</tr>
</tbody>
</table>
<h5 id="rebuildoffline">-RebuildOffline</h5>
<p>Will set all the indexes to rebuild offline.<br />
This option is also needed when the server version is below 2005.<br></p>
<table>
<thead>
<tr>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td>Alias</td>
<td></td>
</tr>
<tr>
<td>Required</td>
<td>False</td>
</tr>
<tr>
<td>Pipeline</td>
<td>false</td>
</tr>
<tr>
<td>Default Value</td>
<td>False</td>
</tr>
</tbody>
</table>
<h5 id="enableexception">-EnableException</h5>
<p>By default, when something goes wrong we try to catch it, interpret it and give you a friendly warning message.<br />
This avoids overwhelming you with &quot;sea of red&quot; exceptions, but is inconvenient because it basically disables advanced scripting.<br />
Using this switch turns this &quot;nice by default&quot; feature off and enables you to catch exceptions with your own try/catch.<br></p>
<table>
<thead>
<tr>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td>Alias</td>
<td></td>
</tr>
<tr>
<td>Required</td>
<td>False</td>
</tr>
<tr>
<td>Pipeline</td>
<td>false</td>
</tr>
<tr>
<td>Default Value</td>
<td>False</td>
</tr>
</tbody>
</table>
<h5 id="force">-Force</h5>
<p>This will disable the check for enough disk space for the action to be successful.<br />
Use this with caution!!<br></p>
<table>
<thead>
<tr>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td>Alias</td>
<td></td>
</tr>
<tr>
<td>Required</td>
<td>False</td>
</tr>
<tr>
<td>Pipeline</td>
<td>false</td>
</tr>
<tr>
<td>Default Value</td>
<td>False</td>
</tr>
</tbody>
</table>
<h5 id="whatif">-WhatIf</h5>
<p>Shows what would happen if the command were to run. No actions are actually performed.<br></p>
<table>
<thead>
<tr>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td>Alias</td>
<td>wi</td>
</tr>
<tr>
<td>Required</td>
<td>False</td>
</tr>
<tr>
<td>Pipeline</td>
<td>false</td>
</tr>
<tr>
<td>Default Value</td>
<td></td>
</tr>
</tbody>
</table>
<h5 id="confirm">-Confirm</h5>
<p>Prompts you for confirmation before executing any changing operations within the command.<br></p>
<table>
<thead>
<tr>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td>Alias</td>
<td>cf</td>
</tr>
<tr>
<td>Required</td>
<td>False</td>
</tr>
<tr>
<td>Pipeline</td>
<td>false</td>
</tr>
<tr>
<td>Default Value</td>
<td></td>
</tr>
</tbody>
</table>
<p> </p>

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