Dell EMC Unity: Unable to refresh managed server <esxi host name> because of a connection issue. (User Correctable)

Possible Changes:

• Network changes (Routing, IP etc.) in your virtual environment
• Credential changes on vCenter or ESXi
• Migration of ESXi from one vCenter to another

When polling vCenter or ESXi in Unisphere you receive the following Alert:



"Unable to refresh managed server <server name> because of a connection issue."

Possible causes:

• True connection issue from Unisphere to the ESXi server or vCenter over the IP network
• Hung configuration information from ESXi or vCenter to Unipshere.

Remove vCenter from Access>VMware tab and then re-add, providing proper credentials.

 **This is non-disruptive to production.  When vCenter or ESXi hosts are removed from the Access>VMware tab, the ESXi hosts are moved to Access>Hosts tab for management.  No initiators are removed.  This process only affects integrated management of your virtual environment, not production and processing of I/O


When you attempt to delete a configured ESXi host with storage attached (Won't let you, this means that as long as you have LUNs attached to the host, you shouldn't be able to Accidentally delete a connected Host):



Delete vCenter or ESXi from Access>VMware:



ESXi host will be moved to Access>Hosts:

 


To add it back under the vCenter, go to ACCESS > VMware > vCenters and under  More Actions  click on  Find ESXi Hosts  or select the  "Plus symbol" to re-add the vCenter:

 

Provide proper credentials and add the host back under the vCenter that manages it:

This article has been promoted as HVC on DELL EMC Community Network (DECN):https://community.emc.com/docs/DOC-60049