Simplified Disaster Recovery (SDR) would recover volume labels with unreadable characters when using the volume labels in Japanese and recovering the disk layout by SDR.
The disk layout recovery screen also displays unreadable characters.
This is harmless for the recovery of disk layout and data.
This Issue is resolved with Backup Exec 2012 Hotfix 180962
Windows Server 2003
Backup Exec 2012
Recovering disk layout during Simplified Disaster Recovery (SDR)