Optimized duplication or duplicate to tape backup from a client side dedup backup fails with a “Backup Storage read/write error has occurred” error.

Optimized duplication or duplicate to tape backup from a client side dedup backup of a 32-bit RADA client fails with a “Backup Storage read/write error has occurred” error. If a server side dedupe backup job is attempted then the optimized duplication or duplicate to tape job complete successfully.

For more details please refer to the following article:

http://www.symantec.com/docs/TECH198064