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    <p><strong>First question:</strong> You can use the following code to get properties of DataStore. I tested this code on vCenter 5.1</p> <pre><code>public void Test() { var properties = GetProperties( new ManagedObjectReference { type = "Datastore", Value = "&lt;your_datastore_key&gt;" }, new[] {"summary.capacity", "summary.freeSpace", "summary.name"}); } private List&lt;DynamicProperty&gt; GetProperties(ManagedObjectReference objectRef, string[] properties) { var typesAndProperties = new Dictionary&lt;string, string[]&gt; { { objectRef.type, properties } }; var objectContents = RetrieveResults(typesAndProperties, new List&lt;ManagedObjectReference&gt; { objectRef }); return ExtractDynamicProperties(objectRef, objectContents); } private List&lt;ObjectContent&gt; RetrieveResults(Dictionary&lt;string, string[]&gt; typesAndProperties, List&lt;ManagedObjectReference&gt; objectReferences) { var result = new List&lt;ObjectContent&gt;(); var tSpec = new TraversalSpec { path = "view", skip = false }; var oSpec = new ObjectSpec { skip = true, selectSet = new SelectionSpec[] { tSpec } }; oSpec.obj = service.CreateListView(serviceContent.viewManager, objectReferences.ToArray()); tSpec.type = "ListView"; var fSpec = new PropertyFilterSpec { objectSet = new[] { oSpec }, propSet = typesAndProperties.Keys.Select(typeName =&gt; new PropertySpec { type = typeName, pathSet = typesAndProperties[typeName] }).ToArray() }; PropertyFilterSpec[] pfs = { fSpec }; var retrieveResult = service.RetrievePropertiesEx(serviceContent.propertyCollector, pfs, new RetrieveOptions()); if (retrieveResult != null) { result.AddRange(retrieveResult.objects); while (!String.IsNullOrEmpty(retrieveResult.token)) { retrieveResult = service.ContinueRetrievePropertiesEx(serviceContent.propertyCollector, retrieveResult.token); result.AddRange(retrieveResult.objects); } service.DestroyView(oSpec.obj); } return result; } private static List&lt;DynamicProperty&gt; ExtractDynamicProperties(ManagedObjectReference objectRef, IEnumerable&lt;ObjectContent&gt; objectContents) { var result = new List&lt;DynamicProperty&gt;(); foreach (var objectContent in objectContents) { if (objectContent.propSet == null) continue; if (objectContent.obj == null) continue; if (objectContent.obj.type != objectRef.type || objectContent.obj.Value != objectRef.Value) continue; result.AddRange(objectContent.propSet); } return result; } </code></pre> <p><strong>How to run the sample:</strong></p> <ol> <li>Initialize the <code>service</code> by object of <code>VimService</code> class and the <code>serviceContent</code> by object of <code>ServiceContent</code> class.</li> <li>Login to vCenter or ESX using <code>service</code>.</li> <li>Replace <code>&lt;your_datastore_key&gt;</code> with Key of your datastore. You can use the <a href="http://pubs.vmware.com/vsphere-50/index.jsp?topic=/com.vmware.wssdk.pg.doc_50/PG_ChB_Using_MOB.20.1.html" rel="nofollow">Managed Object Browser</a> to find keys of their datastores. To get a description of datastore object, go to following links in MOB: content -> rootFolder -> childEntity -> datastoreFolder -> childEntity. Value of "Managed Object ID" on top of page is correct Key (like <code>datastore-46</code>).</li> </ol> <p><strong>Second question:</strong> Yes, the type of ManagedObjectReference is case sensitive.</p>
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    1. POGetting VMWare DataStore inventory data (inventory traversal)
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    1. POGetting VMWare DataStore inventory data (inventory traversal)
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    1. COI get null back for retrieveResult :( I thought maybe it had something to do with datastore-46, but even setting it to my local datastore name didn't help (and I can't hard-code datastore names anyway)
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    2. COI updated my answer and described how to get the datastore Key. It's only sample getting properties of datastore. If you need to get list of datastores, you can do it using MOB, SDK Documentation and my implementation of GetProperties() method. It's really not a difficult task.
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    3. COI'm sorry I'm such a noob, but what is MOB? Managed Object? I keep reading that Datastore isn't a Managed Object. I think my problem is I'm just not understanding how traversals are done, and the documentation hasn't helped my cob-webbed brain :(
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