Backup of a Microsoft Office SharePoint Server 2007 (MOSS 2007)

Hello,

When backing up a MOSS 2007 server (only one server in the farm at the moment) I get these messages when using VSS and the All saveset.
Is there a module that supports these writers? Or are SharePoint not supported yet?
Even with these error messages are the "OSearch" and "SPSearch" still being correctly save for be to do a recovery with the All saveset (i.e. thru file backup).

VSS SYSTEM SERVICES: VSS Writer: OSearch VSS Writer is not supported, ignoring it.
VSS SYSTEM SERVICES: VSS Writer: SPSearch VSS Writer is not supported, ignoring it.

Thanks,

JL