Hello,
The MSA2050 supports the MSA2050 JBOD enclosure. Only in an upgrade scenario is the MSA2040 or D2700 enclosure.
The D3600 and D3700 enclosures have never been supported on any MSA array. Please refer to SPOCK for current supported configurations: https://h20272.www2.hpe.com/spock/
Cheers,
Shawn