I'm try to backup some VM, first addressing vCenter server, then the single ESXi server.
The configuration seems ok, but when I try to backup I've this error:
Error in copying file '/export/grvm04.superbeton.gruppogrigolin/SBFW02/sg_engine_64bit_01-flat.vmdk': grvm04.superbeton.gruppogrigolin: [datastore1] sg_engine_64bit_01/sg_engine_64bit_01.vmdk: Input/output error: Unknown error (1): 11:58:20: VixDiskLibVimResolveHostName: Failed to resolve IP address, error - -3. 11:58:20: VixDiskLibVim_GetNfcTicket: Unable to resolve ip address for 'grvm04.superbeton.gruppogrigolin'. : Input/output error. Return code: 5
The same for every VM.
From the appliance console, I can ping the failed host, so I can't imagine why it's not working
Thanks for any help