@Ontapforrum is correct, your specific desired configuration is supported. The other main difference betweenX356 and X357, is that X356 drives also support older SAS 3Gbps, whereas X357 does not as it only supports SAS 6 Gpbs and 12 Gbps.
The Hardware Universe tool provides detail on hardware compatibility. Attached is a PDF I exported from our Hardware Universe tool that lists disk compatibility.
The other difference is that X357 supports multi-stream writes (MSW) and X356 does not. In practice this is only an issue in extreme IO environments and where drives are mixed, they will operate as non-MSW. This is not reflected in HWU - it took me a lot of searching to determine.