manual

47 www.microsoft.com/sharepoint
SQL Snapshots
SharePoint Server 2010 backup and export take advantage of SQL snapshots. When a
Windows PowerShell command is run by using a SQL snapshot the first thing that
happens is that a snapshot of the database is created and then the remaining command
is executed against the SQL snapshot. This provides a method that will reduce the load
on the production databases. For more information about SQL snapshots, refer to the
following link: Database Snapshots (http://go.microsoft.com/fwlink/?LinkId=156753).
Search and Index Backup and Restore
SharePoint Server 2010 has the ability to back up search and index databases by using a
point and time approach. This will allow SharePoint Administrators to restore the search
administration, crawl, and query databases. SharePoint Server will then be able to
complete an incremental crawl based on all content that has been modified since the
backup was taken. This will eliminate the requirement to complete a full crawl if the
search database needs to be restored.
Multi-tenancy and Hosting
Microsoft® SharePoint® Server 2010 has the capability to isolate and separate data
from different Web sites while sharing service application resources across these same
sites. This capability is called multi-tenancy. Multi-tenancy of services creates a true
hosting environment and makes it possible to share service resources across customers
(tenants) while partitioning data based on site subscriptions. Site subscriptions group
tenant data across all site collections owned by the tenant, and provide the ability to
separate and group each tenant’s data in an otherwise shared environment.
Administrators can centrally deploy and manage features and services while giving
tenants full control over the usage and experience.
Site Subscriptions
Multi-tenancy relies on site subscriptions and subscription IDs. Site collections for each
tenant are grouped together by site subscription based on a common subscription ID.
The subscription ID is used to map features and services to tenants and also to partition
service data according to tenant. The following key points provide additional
perspective about the capability: