Sharepoint 2010 Misconception with RBS


After Sharepoint 2010 sp1 is released , some new features and improvements has been spreading in several blogs.And one of the most interested the new content database limits. In SP1 , by defining specific requirements for large data storage in SharePoint, Microsoft is able to increase the supported limits for data storage in SharePoint.
Sotware boundaries and limits and the primary changes are:

  1. For a SharePoint content database up to 200 GB there are no special requirements and this limit is included for consistency.
  2. For a SharePoint content database up to 4 TB you need to additionally plan for the following two requirements:
    • Requires disk sub-system performance of 0.25 IOPS per GB, 2 IOPS per GB is recommended for optimal performance.
    • Requires the customer to have plans for high availability, disaster recovery, future capacity, and performance testing.
    • And you need to review additional considerations in the TechNet Boundaries and Limits article.
  3. For a SharePoint content database over 4TB specifically for a Document Archive scenario you are required to additionally plan for the following:
    • SharePoint sites must be based on Document Center or Records Center site templates and must be an archive scenario where less than 5% of content is actively read from each month and less than 1% of content is actively written to.
    • Do not use alerts, workflows, link fix-ups, or item level security on any SharePoint objects in the content database. Note: document archive content databases can be the recipient of documents as a result of Content Routing workflow.
  4. Other specific limits changes being made at the same time:
    • A new limit of 60million items in any one SharePoint content database
    • The specific 5 TB limit per SQL Server instance has been removed.  Instead you should work with a SQL Server professional to plan for database storage.

 Also these new extended limitation is not our artile issue if you need more info see:
http://technet.microsoft.com/en-us/library/cc262787.aspx

And also RBS has some improvements:
The Microsoft SQL Server FILESTREAM RBS provider is now supported allowing for iSCSI connections to lower cost NAS storage. The SQL Server RBS provider is one option for RBS use with SharePoint and there are a number of ISV’s who also have RBS providers.

What about RBS misconception: Misconception is that RBS can provide extra database size limit ? Answer is “No”:

First of all Microsoft Says :
“We are clarifying that Remote Blob Storage (RBS) does not offer a way to increase the SharePoint content database size limits. The content database supported size limits apply to the sum of data stored in SQL Server plus data stored outside of SQL Server using an RBS provider”

Even if you use RBS or not , Sharepoint boundries is strict and you should not able to change it. And this is not only just Content DB size limit. it is also valid for all Sharepoint Limitation,  including Maximum document size limit of 2 GB for one file.

See you in next article…

 

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About bpostaci
Sr. Support Escalation Engineer in Microsoft.

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