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?

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When you look at the backup configuration, is the box to backup the Exchange Information Store checked, or are you only backing up the drives?

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SBS Backup doesn't give me that option in SBS Console. I can only select the drives to backup, the backup-target and the timeplan. – wullxz Nov 21 '11 at 23:08
That would be why - unless your backup agent is Exchange aware (that is, it knows it's backing up an Exchange database), it treats the database as a file and does not commit the logs. – Driftpeasant Nov 21 '11 at 23:15
But the integrated SBS 2008 Backup should be able to backup the exchange-database, shouldn't it? I mean: Microsoft ships this backup-tool with an SBS that has ALWAYS an exchange-server on board... – wullxz Nov 21 '11 at 23:17
Right - and your exchange database is being backed up. It's just not aware enough to commit the logs. It is an included tool, but it's not a full featured one. – Driftpeasant Nov 21 '11 at 23:52
<irony>Great!</irony>... So, what should I do to get the logs commited? Is there any recomended way to do this? – wullxz Nov 21 '11 at 23:59
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Here is a link that can do what you need on Win2k8 R2, I know you are referring to SBS however not sure how many features are included for 'Window Server Backup' within SBS.

In summary: Windows server backup->Backup schedule->Modify Backup->Custom->Add items + Advanced Settings=>Vss Settings=>VSS FULL BACKUP->Backup Time->Destination Type->Keep or Change Backup Destination->Finish [Verify that in advance option you see VSS full backup]

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