Backup Manager Verification Options

Arcserve Backup allows you to verify that your data was correctly backed up to media. You can verify data for the entire backup job or for a selected drive in your backup job. The global verification options (applied to the entire job) will be overridden by the options selected for a drive. Arcserve Backup provides the following options for verification:

• None--The backup will not be verified.

• Scan Backup Media Contents--Check the proprietary Arcserve Backup data area (the header) of each file on the backup media. If it is readable, Arcserve Backup assumes the data is reliable. If it is not readable, the Activity Log is updated with this information. This is the fastest verification method.
• If you selected Calculate and Store CRC Value on Backup Media on the Operation tab, Arcserve Backup automatically performs CRC verification. This method assigns a value to the data that you copied to media and compares it to the value assigned to the data that you backed up. This enables you to identify the individual data packets that were backed up.
• Compare Backup Media to Disk--Data from the backup media is read and compared byte for byte against the source files. This option takes time, but ensures that all data on the backup media are exactly as on the disk. If Arcserve Backup finds a mismatch, the errors are recorded in the Activity Log.