<div class="content"><p> </p><p>The GetIdentificationData method retrieves information that
uniquely identifies a <span><a href="8eef5d42-22d7-4302-aed9-12face91505a#gt_c4133b2a-a990-4042-ba44-7fda3090f118" data-linktype="relative-path">disk</a></span>.</p><dl>
<dd>
<div><pre> HRESULT GetIdentificationData(
   [out] VDS_LUN_INFORMATION* pLunInfo
 );
</pre></div>
</dd></dl><p><b>pLunInfo: </b>A pointer to a <span><a href="03d34d53-9130-46e3-a849-b2086ce030a8" data-linktype="relative-path">VDS_LUN_INFORMATION</a></span>
structure that, if the operation is successfully completed, receives the <span><a href="8eef5d42-22d7-4302-aed9-12face91505a#gt_7593b869-71a9-4a02-bab3-377e51729067" data-linktype="relative-path">LUN</a></span>
information for the disk.</p><p><b>Return Values: </b>The method MUST return zero or
a non-error <span><a href="8eef5d42-22d7-4302-aed9-12face91505a#gt_799103ab-b3cb-4eab-8c55-322821b2b235" data-linktype="relative-path">HRESULT</a></span> (as
specified in <span><a href="../ms-erref/1bc92ddf-b79e-413c-bbaa-99a5281a6c90" data-linktype="relative-path">[MS-ERREF]</a></span>)
to indicate success, or return an implementation-specific nonzero error code to
indicate failure. For the HRESULT values predefined by the Virtual Disk Service
Remote Protocol, see section <span><a href="5102cc53-3143-4268-ba4c-6ea39e999ab4" data-linktype="relative-path">2.2.3</a></span>.</p><p>When the server receives this message, it MUST validate the
following parameter:</p><ul><li><p><span><span> 
</span></span>Verify that <b>pLunInfo</b> is not NULL.</p>
</li></ul><p>The server MUST populate the VDS_LUN_INFORMATION structure
that <b>pLunInfo</b> references with the LUN information that uniquely
identifies the disk; it MUST then return an HRESULT indicating failure or
success. For information on VDS_LUN_INFORMATION, see section <span><a href="fe61fdc1-85b3-4b62-ac25-6d119f2b0565" data-linktype="relative-path">2.2.1.3.16</a></span>.</p></div>