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Title
Error "The semaphore timeout period has expired" on Agent Transfers -
Description
Snapshot transfer for Agents are failing and in the Agent AppRecoveryPM.log the following error is present:ERROR 2014-11-10T00:10:37 [3] - Replay.Agent.Implementation.Transfer.TransferDataChannel (RemoteEndPoint=192.168.1.8:61831)Sending of volume data at byte offset 0x62229e000, byte length 0x12000 failedSystem.AggregateException: One or more errors occurred. ---> Replay.Common.Contracts.Win32Api.Win32ApiFailedException: I/O operation - The semaphore timeout period has expiredat Replay.Common.Implementation.Win32Api.NativeIOReader.EndTransmitFile(IAsyncResult asyncResult)at Replay.Common.Implementation.Win32Api.NativeIOReader.<>c__DisplayClass4.b__3(IAsyncResult ar)
The Core error states that a network connection has been dropped. -
Cause
Outdated NIC drivers will cause performance issues with data transfers and a timeout will be met. -
Resolution
Verify that the NIC drivers on the Agent machine and the Core are up to date with the manufacturer's latest release.
If the agent machine is a VMware virtual machine, check to see whether the NIC is an E1000. This will show in MSINFO as a Intel(R) 82574L Gigabit Network Connection. Replace this with a VMXNET3 NIC and this will probably resolve the issue.