Backups to Deduplication storage fail with Error: 0xe00084ec - A backup storage read/write error has occurred.


Backups to Deduplication storage fail with Error: 0xe00084ec - A backup storage read/write error has occurred.

Error Message

Final error: 0xe00084ec - A backup storage read/write error has occurred.
V-79-57344-34028 - A backup storage read/write error has occurred


Usually this error in seen on tape based backup device, where device that has a corrupt or faulty device driver in operation. This can also cause the device to go offline. In this case there can be problem with Disk Storage device where deduplication storage folder is created.


To fix or isolate the issue, try the following the steps:
1. Check the available free space on the volume hosting the Deduplication Folder and make sure that more than 20% is free.
2. Reapply the latest Device driver Installer (DDI) set for Backup Exec, so that it can apply all the latest fixes for deduplication which got released along with DDI. For latest DDI refer
3. Run an inventory on the deduplication folder.
4. Perform a disk-based backup (B2D or backup to disk) to eliminate the deduplication folder from the equation.
5.If the remote servers are located behind a firewall..the following technotes explain how to proceed  and which port to open (TECH43579 and  TECH49563).
6.Intermediate devices, like routers or firewalls, could be closing tcp connections that stay  idle for some time. In this case the configuration of  those devices has to be modified to reflect a  sensible value for the "tcp idle timeout" parameter.


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