I have a 3rd party GIS application that adds images to a SQL Server database via a BLOB field. I want to be able to easily access these images in their native format in the BLOB field from an ArcGIS Server based application. Unfortunately, the ArcGIS Server REST API does not support BLOBs. As such, the current workaround is to store the images in another format that can be read by the ArcGIS Server REST API, which results in duplication of storage. From other ESRI forum posts, I can see that there are other 3rd party GIS applications/vendors that store data in BLOB format so I'm sure this would be useful for other developers as well.