Managing Devices and Media › Device Manager › Implement Logical Block Protection

Implement Logical Block Protection

Logical Block Protection (LBP) is functionality offered by manufacturers of stand-alone tape drives, such as IBM and HP, that lets Arcserve Backup detect read and write errors that occur on drives under the following conditions:

• An error occurs during the process of writing the backup data to the media. For example, the data is corrupt.
• The backup data changed as it transmitted through the network or storage area network.

When an error occurs, the drive reports a SCSI error in the Tape Engine log file and the backup will fail.

The Arcserve Backup implementation of LBP does not support the following backups:

• LBP on Read operations
• Arcserve Tape RAID backups
• NAS (Network attached storage) backups
• Arcserve Backup UNIX/Linux Data Mover backups
• File system device backups

  Example: Data deduplication and staging backups

To implement LBP, you can create the registry key described in the following procedure. The registry entry can be created under the DEVICE<#> key in the registry for the stand-alone tape drive.

Follow these steps:

1. Log in to the Arcserve Backup server
2. Open the following registry key:

   HKEY_LOCAL_MACHINE\SOFTWARE\ComputerAssociates\CA ARCServe Backup\Base\TapeEngine\DEVICE<#>
   

   Note: DEVICE# represents the number of the device where you want to implement LBP.

3. Create the following DWORD:

   LBP
   

4. Set the DWORD value of LBP to 1 and save the changes.

   Note: To disable LBP, set the DWORD value of LBP to 0.