Backup SBS with Mozy

We’ve recently taken on a new client who are still running on SBS 2003, and one of our first steps was to fix their backups. Their environment has lead us to using MozyPro which is working fantastically, but we couldn’t initially get the application to correctly identify and purge the Exchange logfiles.

After a bit of research it transpires the VSS Writer service needs to be enabled for Exchange – it’s disabled by default on an SBS install to prevent conflict with NTBackup.exe when backing up the System State.

To enable VSS Writer:

  1. Open regedit and navigate to: HKLM\SYSTEM\CurrentControlSet\Services\MSExchangeIS\ParametersSystem
  2. Set DisableExchangeWriter = 0
  3. Restart the ‘Microsoft Exchange Information Store’ service

You then need to get Mozy to recognise the new VSS entry:

  1. Go back into regedit and navigate to: HKLM\SOFTWARE\mozypro\state
  2. Set vss_scan = 1
  3. Restart the ‘MozyPro Backup Service’

Open up MozyPro’s settings and you should see a ‘[VSS] Microsoft Exchange Server’ entry appear under ‘Backup sets’. If you include that backup set in your backup job then the Exchange databases will be backed up and the logs purged whenever the job runs.

As an aside the ‘vss_scan’ registry key gets reset to ’0′ after the Mozy service has been restarted.

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