Hello,
I first have to caution you on the age of this product. The MSA1510i went End of Support Life 21 December 2015. Additionally, the MSA1510i only supported ESXi 3.5. Newer versions of ESXi which use ATS would likely be incompatable with the array.
The way you are setting up the target portals is incorrect. Redundant data path portals will be SB0 and SB1. So you would have SA0 and SB0 as a target and SA1 and SB1 as another. Please refer to the following link which will perhaps help with your configuration. http://h20628.www2.hp.com/km-ext/kmcsdirect/emr_na-c01503404-1.pdf
I still suggest you consider using a new product which will have spare parts, new hard drives and supportability with new firmware and features. The MSA1050 has currently released new firmware and would likely fit your needs. Plus the performance would be much better!
Cheers,
Shawn