What's new in SharePoint 2010 Maintenance

1. New upgrade scenarios - SharePoint Server 2010 has several features that have been introduced that allow for upgrade scenarios to occur with little to no outages and at the same time allow for quicker upgrade windows. 
   The first feature is the use of read-only databases which was made available starting with Office SharePoint Server 2007 service pack 2. SharePoint Server 2010 now recognizes a content database has been made read-only from with-in SQL Server and will trim the UI as if all site collections were marked read-only. This allows users read access to the content while the upgrade takes place.
2. Patching improvements. The patch management UI and patch reporting cmdlet allow for the monitoring of patches throughout the farm. There are also patch status health rules that will alert an administrator to inconsistencies
3. Granular Backup/Restore from Central Administration (not only vis STSADM) – including recovery single document
4. Recover data from unattached content database - you don't need to attach content database backup to the SQL Server to recover data from there
5. Browse the content of a content database that is attached to a SQL server but not associated with SharePoint Server
6. Automatic Failover
7. Workflows are not Imported/Exported - when you export/import your Site  WorkFlows won't be included, you need to move them manually