Some limitations apply when you build custom repository types by using repository APIs in Pega Platform™.

• Unlike Amazon S3, Microsoft Azure does not support the creation of an empty folder. To support the new folder API, when you invoke D_pxNewFolder, the Repository Manager creates an empty BLOB named $.PEGA$ under that folder because the only way to create a folder in Azure is to create a BLOB under the folder.
• When you use the get file API, D_pxGetFile, the file content is loaded into memory as a base-64 encoded string. When the size of the file to be read is larger than 45 MB, an exception is thrown and the content is not loaded into memory. You can configure the maximum file size by using the repository/maxFileSizeInMemory dynamic system setting in the Pega-IntegrationEngine ruleset.

For more information about building repository types, see Custom repository types.