There has been ongoing debate in the SharePoint and SQL communities among customers, between experts and MVPs, and even within Microsoft itself about content scalability, the impact of documents on storage capacity and performance, and the role of BLOB externalization, which allows you to relocate the binary large object (BLOB)the unstructured data that represents the content of a documentto more cost-effective storage tiers.
This white paper will make sense of the issues as well as the varied perspectives and guidance related to BLOB externalization.
We will begin by reviewing the default configuration of SharePointwith which SharePoint stores a documents content as a BLOB in the content databaseand by examining the perhaps surprising multiplier effect of a BLOB on the storage tier through the entire lifecycle of the document. We will then detail the two options that Microsoft has provided for BLOB externalization: external BLOB store (EBS) and remote BLOB store (RBS).
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