Each volume contains a Tivoli® Storage Manager volume header that begins with a header magic number. A bad magic number indicates that this volume is either corrupted or not suitable for restoring the database.
The server does not process the DSMSERV RESTORE DB command.
Check the volume history file to make sure that this volume is a valid database backup volume. If the volume is corrupted, restore the database to a different time using a different set of backup volumes.