Hi, Is there an earlier message where it shows that it was unable to reach the storage array? Is the firmware up to date?   
Hi! I have Dell Modular Disk Storage Manager application on the management station. In Event Log I quickly see next error message. Source: StorageArray ID: 3 sfh-storage1; ;Critical;The persistent monitor running on Host srv-sc can now reach the indicated Storage Array. sfh-storage is name of my Disk Storage MD3200i. What's the problem? 
StorageArray 3