Backup hangs at 20%

Unanswered Question
Apr 2nd, 2009

CUCM 7.0

Backup gets to TFTP and the tar file reaches 1,044,976KB in size and hangs. No log file is generated that I can find. Trace from DRF indicates the following:

2009-04-02 13:34:09,000 INFO [NetMessageDispatch] - drfMessageReceiver::HandleMessage: Message ID3100 has been validated successfully

2009-04-02 13:34:09,000 DEBUG [NetMessageDispatch] - drfMessageHandler:HandleShowStatus: Received show status request

2009-04-02 13:34:09,003 DEBUG [NetMessageDispatch] - drfMessageHandler:HandleShowStatus: Show status response sent

2009-04-02 13:34:11,139 INFO [NetMessageDispatch] - drfMessageReceiver::HandleMessage: Message ID1120 has been validated successfully

2009-04-02 13:34:11,139 DEBUG [NetMessageDispatch] - {STATE_BACKUP_SERVER_DIRECT} drfBackup:HandleResponse_UPD(Device=-):

This is over and over again in the trace. SFTP server is FreeFTPd.

It is a Manual Backup.

I have this problem too.
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dom_rozzi Thu, 05/06/2010 - 06:45

I'm guessing that based on the timelapse since originally posting this, you've been able to determine the cause of the issues, but we ran into this as well. The problem is with freeFTPd.  It has a file size limitation (1GB) and will not complete the backup if the file is larger.  We've been looking for another sftp server that will work (with little success to this point), and had opened a case a while back.  We were advised to use OpenSSH via Cygwin (for backups to a windows server).

David Hailey Thu, 05/06/2010 - 11:34

Use CopSSH - which is OpenSSH for Windows.  Easy to install and maintain.  Straightforward and reliable.  No issues.  We recommend it to all of our customers who do not already have a preferred client


allan.thomas Thu, 05/06/2010 - 14:40


It would appear that there is certainly a file size limitation within FreeFTPd which Cisco are aware of, unfortunately this is not highlighted with the documenation regarding DRS which I can find.  The following is taken from the CUCM Managed Service Guide 7.1 regarding SFTP Billing servers below:-


FTP: Microsoft FTP service  (Windows 2000 5.00.2195 sp4, IIS 5.0), WAR FTP Daemon (, and  FreeFTPd (1.0.10 and 1.0.11). Use FreeFTPd only for files that are less  than 1 GB in size.

SFTP: FreeFTPd (1.0.10 and  1.0.11). Use Free FTPd only for files that are less than 1 GB in size.

I don't think you are the first to be affected here, if you look at the forums at you see similar post regarding file sizes above 1Gb.

The DRS Guide mention that the following SFTP servers are supported and recommended, but you may use any SFTP server, however you may wish to avoid freeFTPD in your case.

•Open SSH (for Unix systems)

•Cygwin (refer to

•freeFTPD (refer to



Hope this helps, pls rate helpful posts.

dom_rozzi Fri, 05/07/2010 - 05:49

David and Allan,

Thank you both for your responses.  We pulled a copy of OpenSSH from sourceforge  yesterday and gave it a whirl last night.  Success.

Thanks again,



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