Error "A checksum of the data has failed" when creating a duplicate tape

[JimStruve]

I am using a Policy to create a Backup to Disk with duplicates to tape.  There are Monthly and Weekly full backups with Daily incremental.  The daily incremental to disk duplicate OK, only the full backups do this.

I get this error in the job log of the duplicate:

Checksum on storage media failed to verify.
Data for Mailbox Store (DMEXCH04) is corrupt.

The source Backup to Disk completes without an error.  I get the same error if I attempt to do a manual duplicate.

I have 10 other policies that are similar and only this one with the Exchange Information Store exhibits this behavior.

[Ben_L_]

Jim,

What happens if you were to backup the Exchange data straight to tape instead of going to disk then to tape?

[JimStruve]

Backup direct to tape works without error.

[m_heselwood]

Hello

I'm doing full exchange backup ever night and getting the same errors, just done a test straight to tape and that works ok , Going to run a backup straight to tape tonight on all 4 mail stores we use. Its only been happening the last week but the backup server only been running about 3 weeks

The links on the errors are all for old version of backup exec.

also  I now can't see any folders in restore tab for the public folders

[Ben_L_]

Jim,

Can you check the fragmentation levels of the disk or disks you are using for Backup to Disk locations?