diff --git a/DiscImageChef.Devices/ChangeLog b/DiscImageChef.Devices/ChangeLog
index 8f656a52b..de8120c39 100644
--- a/DiscImageChef.Devices/ChangeLog
+++ b/DiscImageChef.Devices/ChangeLog
@@ -1,3 +1,14 @@
+2016-01-13  Natalia Portillo  <claunia@claunia.com>
+
+	* Enums.cs:
+	* DiscImageChef.Devices.csproj:
+	* Device/ScsiCommands/ArchiveCorp.cs:
+	  Added vendor commands for Archive Corporation Viper 2060S,
+	  2125S and 2150S.
+
+	* Device/ScsiCommands/Adaptec.cs:
+	  Corrected documentation typo.
+
 2016-01-13  Natalia Portillo  <claunia@claunia.com>
 
 	* Enums.cs:
diff --git a/DiscImageChef.Devices/Device/ScsiCommands/Adaptec.cs b/DiscImageChef.Devices/Device/ScsiCommands/Adaptec.cs
index d45f71ffb..95a8c4049 100644
--- a/DiscImageChef.Devices/Device/ScsiCommands/Adaptec.cs
+++ b/DiscImageChef.Devices/Device/ScsiCommands/Adaptec.cs
@@ -47,7 +47,7 @@ namespace DiscImageChef.Devices
         /// </summary>
         /// <param name="buffer">Buffer.</param>
         /// <param name="senseBuffer">Sense buffer.</param>
-        /// <param name="lba">SCSI.</param>
+        /// <param name="lba">SCSI Logical Block Address.</param>
         /// <param name="timeout">Timeout.</param>
         /// <param name="duration">Duration.</param>
         public bool AdaptecTranslate(out byte[] buffer, out byte[] senseBuffer, uint lba, uint timeout, out double duration)
@@ -61,7 +61,7 @@ namespace DiscImageChef.Devices
         /// <param name="buffer">Buffer.</param>
         /// <param name="senseBuffer">Sense buffer.</param>
         /// <param name="drive1">If set to <c>true</c> request the data from drive 1.</param>
-        /// <param name="lba">SCSI.</param>
+        /// <param name="lba">SCSI Logical Block Address.</param>
         /// <param name="timeout">Timeout.</param>
         /// <param name="duration">Duration.</param>
         public bool AdaptecTranslate(out byte[] buffer, out byte[] senseBuffer, bool drive1, uint lba, uint timeout, out double duration)
diff --git a/DiscImageChef.Devices/Device/ScsiCommands/ArchiveCorp.cs b/DiscImageChef.Devices/Device/ScsiCommands/ArchiveCorp.cs
new file mode 100644
index 000000000..0f98506bb
--- /dev/null
+++ b/DiscImageChef.Devices/Device/ScsiCommands/ArchiveCorp.cs
@@ -0,0 +1,113 @@
+// /***************************************************************************
+// The Disc Image Chef
+// ----------------------------------------------------------------------------
+//
+// Filename       : ArchiveCorp.cs
+// Version        : 1.0
+// Author(s)      : Natalia Portillo
+//
+// Component      : Archive Corp. vendor commands
+//
+// Revision       : $Revision$
+// Last change by : $Author$
+// Date           : $Date$
+//
+// --[ Description ] ----------------------------------------------------------
+//
+// Description
+//
+// --[ License ] --------------------------------------------------------------
+//
+//     This program is free software: you can redistribute it and/or modify
+//     it under the terms of the GNU General Public License as
+//     published by the Free Software Foundation, either version 3 of the
+//     License, or (at your option) any later version.
+//
+//     This program 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 General Public License for more details.
+//
+//     You should have received a copy of the GNU General Public License
+//     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+//
+// ----------------------------------------------------------------------------
+// Copyright (C) 2011-2015 Claunia.com
+// ****************************************************************************/
+// //$Id$
+using System;
+using DiscImageChef.Console;
+
+namespace DiscImageChef.Devices
+{
+    public partial class Device
+    {
+        /// <summary>
+        /// Gets the underlying drive cylinder, head and index bytes for the specified SCSI LBA.
+        /// </summary>
+        /// <param name="buffer">Buffer.</param>
+        /// <param name="senseBuffer">Sense buffer.</param>
+        /// <param name="timeout">Timeout.</param>
+        /// <param name="duration">Duration.</param>
+        public bool ArchiveCorpRequestBlockAddress(out byte[] buffer, out byte[] senseBuffer, uint timeout, out double duration)
+        {
+            buffer = new byte[3];
+            byte[] cdb = new byte[6];
+            senseBuffer = new byte[32];
+            bool sense;
+
+            cdb[0] = (byte)ScsiCommands.Archive_RequestBlockAddress;
+            cdb[4] = 3;
+
+            lastError = SendScsiCommand(cdb, ref buffer, out senseBuffer, timeout, ScsiDirection.In, out duration, out sense);
+            error = lastError != 0;
+
+            DicConsole.DebugWriteLine("SCSI Device", "ARCHIVE CORP. REQUEST BLOCK ADDRESS took {0} ms.", duration);
+
+            return sense;
+        }
+
+        /// <summary>
+        /// Gets the underlying drive cylinder, head and index bytes for the specified SCSI LBA.
+        /// </summary>
+        /// <param name="senseBuffer">Sense buffer.</param>
+        /// <param name="lba">Logical Block Address, starting from 1.</param>
+        /// <param name="timeout">Timeout.</param>
+        /// <param name="duration">Duration.</param>
+        public bool ArchiveCorpSeekBlock(out byte[] senseBuffer, uint lba, uint timeout, out double duration)
+        {
+            return ArchiveCorpSeekBlock(out senseBuffer, false, lba, timeout, out duration);
+        }
+
+        /// <summary>
+        /// Positions the tape at the specified block address
+        /// </summary>
+        /// <param name="senseBuffer">Sense buffer.</param>
+        /// <param name="immediate">If set to <c>true</c>, return from the command immediately.</param>
+        /// <param name="lba">Logical Block Address, starting from 1.</param>
+        /// <param name="timeout">Timeout.</param>
+        /// <param name="duration">Duration.</param>
+        public bool ArchiveCorpSeekBlock(out byte[] senseBuffer, bool immediate, uint lba, uint timeout, out double duration)
+        {
+            byte[] buffer = new byte[0];
+            byte[] cdb = new byte[6];
+            senseBuffer = new byte[32];
+            bool sense;
+
+            cdb[0] = (byte)ScsiCommands.Archive_SeekBlock;
+            cdb[1] = (byte)((lba & 0x1F0000) >> 16);
+            cdb[2] = (byte)((lba & 0xFF00) >> 8);
+            cdb[3] = (byte)(lba & 0xFF);
+            if (immediate)
+                cdb[1] += 0x01;
+
+            lastError = SendScsiCommand(cdb, ref buffer, out senseBuffer, timeout, ScsiDirection.None, out duration, out sense);
+            error = lastError != 0;
+
+            DicConsole.DebugWriteLine("SCSI Device", "ARCHIVE CORP. SEEK BLOCK took {0} ms.", duration);
+
+            return sense;
+        }
+    }
+}
+
diff --git a/DiscImageChef.Devices/DiscImageChef.Devices.csproj b/DiscImageChef.Devices/DiscImageChef.Devices.csproj
index 619af967a..a6c0cb7de 100644
--- a/DiscImageChef.Devices/DiscImageChef.Devices.csproj
+++ b/DiscImageChef.Devices/DiscImageChef.Devices.csproj
@@ -60,6 +60,7 @@
     <Compile Include="Device\ScsiCommands\SSC.cs" />
     <Compile Include="Device\ScsiCommands\SMC.cs" />
     <Compile Include="Device\ScsiCommands\Adaptec.cs" />
+    <Compile Include="Device\ScsiCommands\ArchiveCorp.cs" />
   </ItemGroup>
   <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
   <ItemGroup>
diff --git a/DiscImageChef.Devices/Enums.cs b/DiscImageChef.Devices/Enums.cs
index cdaa9374f..531e702a3 100644
--- a/DiscImageChef.Devices/Enums.cs
+++ b/DiscImageChef.Devices/Enums.cs
@@ -2607,12 +2607,32 @@ namespace DiscImageChef.Devices
         #endregion NEC vendor commands
 
         #region Adaptec vendor commands
+        /// <summary>
+        /// Translates a SCSI LBA to a drive's CHS
+        /// </summary>
         Adaptec_Translate = 0x0F,
+        /// <summary>
+        /// Configures Adaptec controller error threshold
+        /// </summary>
         Adaptec_SetErrorThreshold = 0x10,
+        /// <summary>
+        /// Reads and resets error and statistical counters
+        /// </summary>
         Adaptec_ReadCounters = 0x11,
+        /// <summary>
+        /// Writes to controller's RAM
+        /// </summary>
         Adaptec_WriteBuffer = 0x13,
-        Adaptec_ReadBuffer = 0x14
+        /// <summary>
+        /// Reads controller's RAM
+        /// </summary>
+        Adaptec_ReadBuffer = 0x14,
         #endregion Adaptec vendor commands
+
+        #region Archive Corp. vendor commands
+        Archive_RequestBlockAddress = 0x02,
+        Archive_SeekBlock = 0x0C
+        #endregion Archive Corp. vendor commands
     }
     #endregion SCSI Commands