Hello,
The MSA2050 is a 12Gb system. Unfortunately the P700m is a 3Gb Smart Array. Due to the firmware on the P700m you cannot connect to a 12Gb array. If you check QuickSpecs you will find the supported SAS Smart Arrays/HBAs that you can use to connect to the MSA2050 SAS array.
http://h20195.www2.hpe.com/v2/redirect.aspx?/products/quickspecs/15935_div/15935_div.HTML
Good news is, you are not doing anything incorrectly. You just need to get compatible hardware in order to make your solution work.
Cheers,
Shawn
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