MSDP client deduplication fails

NetBackup client-side agents (including client deduplication) depend on reverse host name look up of NetBackup server names. Conversely, regular backups depend on forward host name resolution. Therefore, the backup of a client that deduplicates it's own data may fail, while a normal backup of the client may succeed.

If a client-side deduplication backup fails, verify that your Domain Name Server includes all permutations of the storage server name.

Also, Veritas recommends that you use fully-qualified domain names for your NetBackup environment.

See Use fully qualified domain names.