We have RBS installed on our system and I get the error when running Test-SPContentDatabase:
Category : CheckNoEBSStreams
Error : True
UpgradeBlocking : True
Message : Content database cannot be upgraded due to use of the
obsoleted External Binary Storage feature in 'AllDocs' table
with ID '9ae35cec-8982-49e9-a821-6a82f2508930'. You must
migrate that data to another storage feature.
Remedy : Content database cannot be upgraded due to use of the
obsoleted External Binary Storage feature in 'AllDocs' table
with ID '9ae35cec-8982-49e9-a821-6a82f2508930'. You must
migrate that data to another storage feature.
This happens on only two documents among the thousands of documents in our main content database (for a second content database, this error popped up 80 times). I tried quering the AllDocs table on SQL server and couldn't see anything different with the document referred to by the error message compared with other documents. What's even more weird is one of the documents refers to a Team Site reporting template file while the other is a picture from an old photo library.
I see both files and as far as I know, the files are stored as RBS and not EBS. I just started working with the company last year so I don't know if the previous Sharepoint admin was playing around with EBS and I know our environment was migrated from SharePoint 2007 to 2010 two years ago, if that is relevant.