Re: Network Error - fails between 1 and 5%

Your error is:

2013-08-15T15:59:59.948+01:00 [06604 warning 'Default'] [,0] [NFC ERROR] NfcNetTcpWrite: bWritten: -1

2013-08-15T15:59:59.948+01:00 [06604 warning 'Default'] [,0] [NFC ERROR] NfcFile_SendMessage: data send failed:

2013-08-15T15:59:59.948+01:00 [06604 warning 'Default'] [,0] [NFC ERROR]

2013-08-15T15:59:59.948+01:00 [06604 warning 'Default'] [,0] [NFC ERROR] Nfc_GetPutFile:  Error inside NfcFile_Stream

2013-08-15T15:59:59.948+01:00 [06604 error 'task-2'] Sysimgbase_Nfc_GetPutFile failed in M2MDiskCloneMgr with nfcError 'The operation experienced a network error' (error code:3)

2013-08-15T15:59:59.948+01:00 [06604 warning 'Default'] [,0] SSL: Unknown SSL Error

2013-08-15T15:59:59.950+01:00 [06604 warning 'Default'] [,0] [NFC ERROR] NfcNetTcpWrite: bWritten: -1

2013-08-15T15:59:59.950+01:00 [06604 warning 'Default'] [,0] [NFC ERROR] NfcSendMessage: send failed: NFC_NETWORK_ERROR

2013-08-15T15:59:59.951+01:00 [06604 error 'task-2'] managed to managed disk clone failed: The operation experienced a network error

2013-08-15T15:59:59.951+01:00 [06604 error 'task-2'] Disk clone failed with clone error The operation experienced a network error

2013-08-15T15:59:59.951+01:00 [06604 error 'task-2'] TaskImpl has failed with MethodFault::Exception: converter.fault.CloneFault

All other errors you mention are not important or expected. The description of error code 3 is  'The operation experienced a network error'

Check your network configuration and connections with source and destination ESXs