Duplication job fails with error code 191

Problem

Duplication job fails with error code 191

Error Message

Details of the job in the Activity Monitor:

Critical bpdm(pid=xxxxx) sts_read_image failed: error 2060017 system call failed
Critical bpdm(pid=xxxxx) image read failed: error 2060017: system call failed

bpdm log entries :

HostName: STSImageManager: read() failed on image file L:\NBU_TEST\client_1229949000_C1_F1.1229949000.img (error=1450, Unknown error)
STSImageManager: Caught exception in STSIMGImageManager::ReadImage, FILE=STSIMGImage.cpp, FUNCTION=STSIMGImage::ReadImage, LINE=204, ERROR=STS_ESYS

Cause

From the Microsoft's KB article 304101:

One possible resolution is to restrict the backup so that it backs up one file at a time. This may or may not work depending on the sizes of the files to be backed up. (It is expected to work on files that are smaller than 180 gigabytes [GB].) You can also try this resolution if you are backing up several large files, but each file is smaller than 180 GB.

• 3rd Party Reference (KB article 304101): Backup program is unsuccessful when you back up a large system volume (microsoft.com)

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Solution

To fix this issue, do either of the following:

• Fine-tune the Windows registry entries (PoolUsageMaximum, PagedPoolSize), as per Microsoft's KB article 304101.
• Reduce the fragment size of the DSSU to a value less then 100 Gb, take another backup of the server, and then duplicate the images to Tape.