If the library that is connected is not detected correctly by Symantec Backup Exec (tm), no robotic library will show up in the Devices tab of Backup Exec. If a bediag is run on the Backup Exec server, the following will show up in the device discovery portion of the ADAMM log section (Figure 1).

Figure 1
 

The Device Discovery shows "ERROR_INVALID_NAME" because the device identifier string "SONY LIB-162" is not contained in the Backup Exec look-up table for robotic libraries, the VSD Load Table. Backup Exec gets this data for the library name from the media server registry under HKEY_LOCAL_MACHINE on Local Machine\hardware\scsi\devicemap. The devices connected are also displayed in the bediag in the Hardware Configuration Information section (Figure 2).


Figure 2
 

The VSD Load Table is contained within the registry in the SCSICHANGER key located in HKEY_LOCAL_MACHINE on Local Machine\System\CurrentControlSet\Control. This table determines what virtual driver will be loaded to control the library connected to the media server. The VSD Load Table supporting this library will look like Figure 3.

Figure 3
 

Warning: Incorrect use of the Windows Registry Editor can have disastrous results on a server operating system. Great care should be taken when making changes to a Windows Registry. Registry modifications should only be carried out by persons experienced in the use of the Registry Editor application.

Note: For this library to be discovered in Backup Exec, the syntax of the identifier shown in the registry must exactly match what is in the VSDLoadtable.