diff --git a/DiscImageChef.Server/Areas/Admin/Controllers/ScsisController.cs b/DiscImageChef.Server/Areas/Admin/Controllers/ScsisController.cs
index 1d049f21..43d3825e 100644
--- a/DiscImageChef.Server/Areas/Admin/Controllers/ScsisController.cs
+++ b/DiscImageChef.Server/Areas/Admin/Controllers/ScsisController.cs
@@ -1,7 +1,10 @@
 using System.Collections.Generic;
 using System.Linq;
+using System.Reflection;
 using System.Threading.Tasks;
 using DiscImageChef.CommonTypes.Metadata;
+using DiscImageChef.Decoders.ATA;
+using DiscImageChef.Decoders.SCSI;
 using DiscImageChef.Server.Models;
 using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.Mvc;
@@ -150,5 +153,133 @@ namespace DiscImageChef.Server.Areas.Admin.Controllers
 
             return RedirectToAction(nameof(Index));
         }
+
+        public IActionResult Compare(int id, int rightId)
+        {
+            var model = new CompareModel
+            {
+                LeftId = id, RightId = rightId
+            };
+
+            CommonTypes.Metadata.Scsi left  = _context.Scsi.FirstOrDefault(l => l.Id == id);
+            CommonTypes.Metadata.Scsi right = _context.Scsi.FirstOrDefault(r => r.Id == rightId);
+
+            if(left is null)
+            {
+                model.ErrorMessage = $"SCSI with id {id} has not been found";
+                model.HasError     = true;
+
+                return View(model);
+            }
+
+            if(right is null)
+            {
+                model.ErrorMessage = $"SCSI with id {rightId} has not been found";
+                model.HasError     = true;
+
+                return View(model);
+            }
+
+            Inquiry.SCSIInquiry? leftNullable  = left.Inquiry;
+            Inquiry.SCSIInquiry? rightNullable = right.Inquiry;
+            model.ValueNames  = new List<string>();
+            model.LeftValues  = new List<string>();
+            model.RightValues = new List<string>();
+
+            if(!leftNullable.HasValue &&
+               !rightNullable.HasValue)
+            {
+                model.AreEqual = true;
+
+                return View(model);
+            }
+
+            if(leftNullable.HasValue &&
+               !rightNullable.HasValue)
+            {
+                model.ValueNames.Add("Decoded");
+                model.LeftValues.Add("decoded");
+                model.RightValues.Add("null");
+
+                return View(model);
+            }
+
+            if(!leftNullable.HasValue)
+            {
+                model.ValueNames.Add("Decoded");
+                model.LeftValues.Add("null");
+                model.RightValues.Add("decoded");
+
+                return View(model);
+            }
+
+            var leftValue  = left.Inquiry.Value;
+            var rightValue = right.Inquiry.Value;
+
+            foreach(FieldInfo fieldInfo in leftValue.GetType().GetFields())
+            {
+                object lv = fieldInfo.GetValue(leftValue);
+                object rv = fieldInfo.GetValue(rightValue);
+
+                if(fieldInfo.FieldType.IsArray)
+                {
+                    object[] la = lv as object[];
+                    object[] ra = rv as object[];
+
+                    switch(la)
+                    {
+                        case null when ra is null: continue;
+                        case null:
+                            model.ValueNames.Add(fieldInfo.Name);
+                            model.LeftValues.Add("null");
+                            model.RightValues.Add("[]");
+
+                            continue;
+                    }
+
+                    if(ra is null)
+                    {
+                        model.ValueNames.Add(fieldInfo.Name);
+                        model.LeftValues.Add("[]");
+                        model.RightValues.Add("null");
+
+                        continue;
+                    }
+
+                    if(la.SequenceEqual(ra))
+                        continue;
+
+                    model.ValueNames.Add(fieldInfo.Name);
+                    model.LeftValues.Add("[]");
+                    model.RightValues.Add("[]");
+                }
+                else if(lv == null &&
+                        rv == null) { }
+                else if(lv != null &&
+                        rv == null)
+                {
+                    model.ValueNames.Add(fieldInfo.Name);
+                    model.LeftValues.Add($"{lv}");
+                    model.RightValues.Add("null");
+                }
+                else if(lv == null)
+                {
+                    model.ValueNames.Add(fieldInfo.Name);
+                    model.LeftValues.Add("null");
+                    model.RightValues.Add($"{rv}");
+                }
+                else if(!lv.Equals(rv))
+
+                {
+                    model.ValueNames.Add(fieldInfo.Name);
+                    model.LeftValues.Add($"{lv}");
+                    model.RightValues.Add($"{rv}");
+                }
+            }
+
+            model.AreEqual = model.LeftValues.Count == 0 && model.RightValues.Count == 0;
+
+            return View(model);
+        }
     }
 }
\ No newline at end of file
diff --git a/DiscImageChef.Server/Areas/Admin/Views/Scsis/Compare.cshtml b/DiscImageChef.Server/Areas/Admin/Views/Scsis/Compare.cshtml
new file mode 100644
index 00000000..fe88601a
--- /dev/null
+++ b/DiscImageChef.Server/Areas/Admin/Views/Scsis/Compare.cshtml
@@ -0,0 +1,84 @@
+@model CompareModel
+
+@{
+    Layout = "~/Areas/Admin/Views/Shared/_Layout.cshtml";
+    ViewBag.Title = "DiscImageChef";
+}
+@{
+    // /***************************************************************************
+    // The Disc Image Chef
+    // ----------------------------------------------------------------------------
+    //
+    // Filename       : Details.cshtml
+    // Author(s)      : Natalia Portillo <claunia@claunia.com>
+    //
+    // Component      : DiscImageChef Server.
+    //
+    // --[ License ] --------------------------------------------------------------
+    //
+    //     This library is free software; you can redistribute it and/or modify
+    //     it under the terms of the GNU Lesser General Public License as
+    //     published by the Free Software Foundation; either version 2.1 of the
+    //     License, or (at your option) any later version.
+    //
+    //     This library is distributed in the hope that it will be useful, but
+    //     WITHOUT ANY WARRANTY; without even the implied warranty of
+    //     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+    //     Lesser General Public License for more details.
+    //
+    //     You should have received a copy of the GNU Lesser General Public
+    //     License along with this library; if not, see <http://www.gnu.org/licenses/>.
+    //
+    // ----------------------------------------------------------------------------
+    // Copyright © 2011-2019 Natalia Portillo
+    // ****************************************************************************/
+}
+<h2>Comparing SCSI INQUIRY ID @Model.LeftId with ID @Model.RightId</h2>
+@if (Model.AreEqual)
+{
+    <p>No differences found.</p>
+    return;
+}
+
+@if (Model.HasError)
+{
+    <p class="alert-info">@Model.ErrorMessage</p>
+    return;
+}
+<table>
+    <thead>
+    <tr>
+        <th>
+            Value name
+        </th>
+        <th>
+            ID: @Model.LeftId
+        </th>
+        <th>
+            ID: @Model.RightId
+        </th>
+        <th></th>
+    </tr>
+    </thead>
+    <tbody>
+    @for (var i = 0; i < Model.ValueNames.Count; i++)
+    {
+        <tr>
+            <td>
+                @Model.ValueNames[i]
+            </td>
+            <td>
+                @Model.LeftValues[i]
+            </td>
+            <td>
+                @Model.RightValues[i]
+            </td>
+        </tr>
+    }
+    </tbody>
+</table>
+<a asp-action="Index" class="btn btn-primary">Back to List</a>
+<a asp-action="Delete" asp-route-id="@Model.LeftId" class="btn btn-danger">Delete ID @Model.LeftId</a>
+<a asp-action="Delete" asp-route-id="@Model.RightId" class="btn btn-danger">Delete ID @Model.RightId</a>
+<a asp-action="ConsolidateWithIds" asp-route-masterId="@Model.LeftId" asp-route-slaveId="@Model.RightId" class="btn btn-secondary">Replace all dependencies from ID @Model.RightId with ID @Model.LeftId</a>
+<a asp-action="ConsolidateWithIds" asp-route-masterId="@Model.RightId" asp-route-slaveId="@Model.LeftId" class="btn btn-secondary">Replace all dependencies from ID @Model.LeftId with ID @Model.RightId</a>
\ No newline at end of file