Virtual Exports to ESXi Failing with "The server refused connection" (4037684)

Virtual Exports to ESXi Failing with "The server refused connection"

While performing exports to ESXi, the generic error received is that the server refused the connection, or the locked file could not be accessed. Further investigation in the AppRecovery logs reveal the following events:

WARN 2014-09-09T10:25:58 [408] - vddkApi () [NFC ERROR] NfcNetTcpRead: bRead: -1

WARN 2014-09-09T10:25:58 [408] - vddkApi () [NFC ERROR] NfcNet_Recv: requested 264, recevied only 0 bytes

WARN 2014-09-09T10:25:58 [408] - vddkApi () [NFC ERROR] NfcGetMessage: recv failed:

WARN 2014-09-09T10:25:58 [408] - vddkApi () [NFC ERROR] NfcFssrvr_IO: failed to receive io reply

DEBUG 2014-09-09T10:25:58 [408] - vddkApi () DISKLIB-LIB : RWv failed ioId: #630 (2338) (34) .

DEBUG 2014-09-09T10:25:58 [408] - vddkApi () VixDiskLib: Detected DiskLib error 2338 (NBD_ERR_NETWORK_CONNECT).

DEBUG 2014-09-09T10:25:58 [408] - vddkApi () VixDiskLib: VixDiskLib_Write: Write to disk failed: Error 10041633552057 at 4110.

DEBUG 2014-09-09T10:25:58 [408] - Replay.Common.VddkApi.Implementation.VddkApiWrapper () VDDK API reported error VIX_E_HOST_NETWORK_CONN_REFUSED: The server refused connection

DEBUG 2014-09-09T10:25:58 [408] - Replay.Common.Implementation.Virtualization.VirtualDiskWriter () Waiting for 2 minutes before continue export disk #0

Normally these errors point to problems within the environment, impacting the success of the job. For starters, look into the network configurations of the systems on the network. Verify that they are up-to-date in firmware and drivers. Below is a list of other considerations:

1) Ensure that a network scanning and security software is not targeting the AppAssure traffic.

2) Verify that the files on the ESXi host are not be manipulated by a third party conflict.

3) Test the connectivity from the Core to host.

For example: In one instance, a combination of network scanning software and a faulty switch prevented the success of an export job. Once the range of IP address was excluded from the scanner and the switch was replaced with a newer model, the export was able to complete successfully.