$SSFT With competing solutions, the standby server does not go online until ‘active’ is taken offline. In these cases, when the standby server becomes the online server, archiving needs to be configured. As a result, no emails will be archived during this ‘gap’ period. With SonaVault’s email archiving software solution, all emails are archived and no ‘gap’ period exists when the Primary Exchange Server is switched over to the Standby Exchange Server.