Shang1983 - did your performance problem with your MSA 2052 ever get resolved? We're seeing performance problems on our MSA 2052, although we're not using SSDs. Performance was very high when we first installed it, but after a few months we started having Exchange databases fail over to an Exchange server that was on a different array. We quickly found out that performance on our MSA 2052 was now totally wacky - sometimes it's very good indeed, and at other times horrifically slow - 40 to 1000 times slower (depending on the benchmark) than the MSA 2050 that we have in our other location.
So far, HPE support has had us reconfigure and rebuild the entire array, add redundant iSCSI connections, and stop using the SSD read-only cache, and we're still having problems. Sometimes it's blazingly fast, and at other times it's the worst drive array I've ever touched in my 30 years in IT.
So, if yours is fixed, maybe what you did might point me in the direction of a solution for us as well. Thanks!