Forum Discussion
We are still searching for an answer - please see my enhancement request on the community site: https://www-secure.symantec.com/connect/ideas/be-2012-enhancement-duplicate-recovery-chain-option
This option would require that the duplicate process and their associated selections be enhanced to ensure a consistent recovery chain like with Full, Incremental, and Differential backups in BE2012.
Workaround: In the meantime, we are manually monitoring the status of failed duplicates and re-scheduling a full backup to run on any server which experiences failed duplicates. If we run another full, it seems to reset the ability of the next duplicate to run properly.
We also do a manual duplicate to tape whenever we encounter these failures.
Since implementing this strategy we have lowered the incidence of failed duplicates significantly (because we catch them on the first failure) and increased the number of B2D files that we have duplicated (because we are manually doing the duplicate). This has come at the cost of much additional manual review and rerun time (on the order of 1-2 person-hours/day increase)...
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