REO SERIES™
AN-DBP-050a: Configuring a Fibre
Channel-Connected REO VTL for Use
with Microsoft Removable Storage
Manager (RSM)
Overland Storage REO SERIES™
Preface
This document describes how to configure a virtual tape-library (VTL) on
the appliance for use with Microsoft Removable Storage Manager (RSM)
using Fibre Channel.
This document assumes that you have already set up and configured your
REO. For more information, see the Setup Guide that came with your
hardware.
Determining the REO VTL Tape Drive LUN Assignments
1 In the REO GUI, click VTL Manager in the left pane.
The VTL Manager page appears.
2 In the Current VTL Summary section, click the Status button under
Display.
The VTL Status page appears.
3 In the Device Summary section, note the LUN assignments for the
devices.
In the following example, a two-drive VTL was created. The LUN
assignment for Tape Drive 0 is 193, and the LUN assignment for Tape
Drive 1 is 194.
Determining the Tape Device Handles Assigned by
Windows
Microsoft Windows assigns a unique DeviceName (handle) to each
virtual tape-drive detected on the system. Note that the REO Tape
Devices will need to have a tape driver loaded for Windows to detect the
DeviceName. You can use the Registry Editor to determine the unique
names.
Warning: Before you open the registry file, make sure that you back it
up and understand how to restore it if necessary. If you edit the
registry incorrectly, you might cause serious problems that require
you to reinstall your operating system. Edit the registry at your own
risk. Prior to making any changes, refer to the following Microsoft
Knowledge Base article: http://support.microsoft.com/kb/256986/ENUS/
2 ! AN-DBP-050a: Configuring a Fibre Channel-Connected REO VTL for Use with Microsoft Removable Storage
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Application Note
To determine the handles
!
Use regedit.exe or regedt32.exe (click Start > Run > regedit [or
regedt32]) to identify the DeviceName (handle) assigned to the tape
devices at LUN 193 & 194.
In the following images, REO Tape Device 0 (LUN 193) has the
DeviceName of Tape0 and REO Tape Device 1 (LUN 194) has the
DeviceName of Tape1.
Determining the Tape Device Handles Assigned by Windows " 3
Overland Storage REO SERIES™
Performing the Manual Configuration for RSM
Perform the Manual Configuration process for Removable Storage
Manager as described in Microsoft Knowledge Base article Q248800
(http://support.microsoft.com/kb/248800/EN-US/).
1 At a Command Prompt on the Windows system, stop RSM by typing:
net stop "removable storage"
2 To back up the RSM database, copy the files in the
%SystemRoot%\System32\Ntmsdata folder to a secure temporary
folder.
3 To restart RSM, type the following:
net start "removable storage"
4 Use the RSM console to make a note of all the drives that appear as
standalone drive libraries.
RSM displays all drives that are not mapped to a changer as standalone
drive libraries, including drives that are actually in the changer but are
unmapped.
Important: Steps 5 and 6 of the manual configuration procedure
outlined in the original article in the Microsoft Knowledge Base
discuss a different method for extracting DeviceName. Because this
method does not work with a REO VTL, do not follow steps 5 and 6.
Instead, use regedit.exe or regedt32.exe to identify the DeviceName
(handle) assigned to the tape devices as described earlier under
Determining the Tape Device Handles Assigned by Windows.
5 Launch regedit.exe or regedt32.exe (click Start > Run > regedit [or
regedt32]) again.
Warning: Before you open the registry file, make sure that you back it
up and understand how to restore it if necessary. If you edit the
registry incorrectly, you might cause serious problems that require
you to reinstall your operating system. Edit the registry at your own
risk. Prior to making any changes, refer to the following Microsoft
Knowledge Base article: http://support.microsoft.com/kb/256986/ENUS/
6 In the Registry Editor window, locate the following key:
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\NtmsSvc\Config\Changerx
7 Change the AutoCfg:REG_DWORD:0x1 value to 0.
Tip: If AutoCfg does not exist, create a new value that is named AutoCfg
with a data type of REG_DWORD, and then type 0 for the data.
8 At a Command Prompt on the Windows system, stop RSM again by
typing:
net stop "removable storage"
9 In the Registry Editor window, locate the following key:
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\NtmsSvc\Config
4 ! AN-DBP-050a: Configuring a Fibre Channel-Connected REO VTL for Use with Microsoft Removable Storage
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Application Note
The Config key contains a subkey for each changer (for example,
Changer0) and a subkey for each standalone drive. Each changer subkey
contains an entry for each drive bay in the changer (for example,
DriveBay0).
10 For each DriveBayx entry that has a ??? value, replace that value with
the device name identified earlier under Determining the Tape Device
Handles Assigned by Windows.
For example:
DriveBay0:REG_SZ:Tape0
DriveBay1:REG_SZ:Tape1
11 Exit the Registry Editor.
12 To restart RSM again, type the following:
net start "removable storage"
RSM reads the new configuration information and initializes the devices.
13 Using the snap-in, put a tape in each drive in the library after RSM is
initialized.
If any of the configurations are incorrect, RSM generates an error
message during the initialization or when you insert a tape in a drive.
Note: If the manual configuration is unsuccessful, stop the RSM
process, and copy your backed up version of the RSM database files
back to the %SystemRoot%\System32\Ntmsdata folder to restore the
database and restart the manual configuration process.
If RSM does not generate any error messages, the manual configuration
was successful.
Based on this example, the changes to the RSM Registry key would look
like this:
Performing the Manual Configuration for RSM " 5
Overland Storage REO SERIES™
Verifying Correct Initialization of RSM
1 After making the appropriate registry changes and restarting RSM,
make sure that you see a screen similar to the following:
Note: The REO VTL will report as an Overland NEO Series Changer
device under Removable Storage\Physical Locations.
2 Make sure that the REO Tape Devices from the VTL are listed under:
Removable Storage\Physical Locations\OVERLAND NEO Series\Drives
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