We're using the Small Business Server Backup that comes with SBS 2008 to backup all drives to an iomega iSCSI-Target. The Backup works fine and everything is shown as successfully backed up.
But the exchange-logs in C:\Program Files\Microsoft\Exchange Server\Mailbox\First Storage Group
and C:\Program Files\Microsoft\Exchange Server\Mailbox\Second Storage Group
aren't flushed.
What could cause this behaviour?