Optional
The 'files' and 'chunks' collections will be prefixed with the bucket name followed by a dot.
Number of bytes stored in each chunk. Defaults to 255KB
Read preference to be passed to read operations
timeoutMS has no effect and will be removed in a future release.
timeoutMS
Write Concern as an object
The 'files' and 'chunks' collections will be prefixed with the bucket name followed by a dot.