RoleInstance.FaultDomain Property


Gets an integer value that indicates the fault domain in which the role instance is running.

Namespace:   Microsoft.WindowsAzure.ServiceRuntime
Assembly:  Microsoft.WindowsAzure.ServiceRuntime (in Microsoft.WindowsAzure.ServiceRuntime.dll)


public abstract int FaultDomain { get; internal set; }
property int FaultDomain {
    virtual int get() abstract;
    internal: virtual void set(int value) abstract;
abstract FaultDomain : int with get, internal set
Public MustOverride Property FaultDomain As Integer
    Friend Set
End Property

Property Value

Type: System.Int32

Type: System.Int32

An integer value that represents the fault domain in which the role instance is running.


A fault domain is a grouping of hardware in which role instances run. When multiple instances of a role are running, Azure distributes the role instances among fault domains. You do not have control over which fault domain is used or the number of fault domains used, but you can query a role instance to know what fault domain it is in.

The following code example shows how to retrieve the fault domain values for role instances:

foreach (var role in RoleEnvironment.Roles) 
   foreach (var roleInstance in role.Value.Instances)      
      Trace.WriteLine("Role instance fault domain: " + roleInstance.FaultDomain, "Information");

See Also

RoleInstance Class
Microsoft.WindowsAzure.ServiceRuntime Namespace

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