Use base model for primary key.

Cicm.Database/Models/StorageByMachine.cs

@@ -30,13 +30,12 @@
 
 namespace Cicm.Database.Models
 {
-    public class StorageByMachine
+    public class StorageByMachine : BaseModel<long>
     {
         public int              MachineId { get; set; }
         public StorageType      Type      { get; set; }
         public StorageInterface Interface { get; set; }
         public long?            Capacity  { get; set; }
-        public long             Id        { get; set; }
 
         public virtual Machine Machine { get; set; }
     }