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Cisco TelePresence IP VCR Series

External storage supported by the IP VCR

What external storage does the IP VCR support?

The IP VCR has the ability to store recordings both locally and on an external NFS server - and usage of both is the same with a few minor exceptions explained at the end of this topic. Setting up external storage on the IP VCR is described in the online help.

NFS server support for external storage on the IP VCR

The IP VCR is an NFS version 3-compliant client that operates with all NFS version 3 servers (UNIX, Windows, virtual share or other). However, because the IP VCR is itself a UNIX platform, it is considerably easier to set up an NFS server on a UNIX platform. External storage on the IP VCR has been tested with the following NFS version 3 servers:

  • Gentoo Linux
  • Red Hat Enterprise Linux 4
  • Solaris 10
  • Microsoft Windows 2003 Server Appliance Edition

Hints for setting up external storage on Microsoft Windows platforms

  • Ensure that you have Services for Unix installed on the Windows server.
  • Verify the Server for NFS and User Name Mapping services have started and are set to Automatic as the Startup Type.
  • On Windows platforms you must map users between the IP VCR and the Windows server. This was achieved by mapping the root user on the IP VCR (uid 0) to the administrator user on the Windows server and setting up read/write permissions. Microsoft provide a couple of guides* on the Microsoft web site which describe how to map users for Windows 2000; this information should also be relevant for Windows 2003, it can be found by entering the following urls:

  • http://www.microsoft.com/technet/interopmigration/unix/sfu/sfumpsrv.mspx
    http://www.microsoft.com/technet/interopmigration/unix/sfu/nfsauth.mspx
  • A tip for mapping users is to create passwd and group files on your Windows server files that are analogous to /etc/passwd and /etc/group on UNIX to define the root user to map (unless you have an NIS server).
  • A useful way of testing whether you have correctly set up a Windows NFS solution is to mount the NFS share from a UNIX client (if you have one) as root and test whether you can read/write.

NFS path

The path to the external storage location is expressed in the following format: <IP address>:<path>

For example: treasure-island:/storage/vcr31

Note that it is not necessary to prefix the server name with a double-backslash (\\).

Restricting access to NFS resources

The IP VCR does not support Kerberos or any other form of authentication. If you want to set up restricted access to NFS files, use access control lists.

IP VCR operations with external storage

If the Export internal recordings option is enables on the IP VCR, then the IP VCR automatically exports the file to the NFS server as soon as recording is complete. If the option is disabled, files can be expoerted manually.

Using the IP VCR with external storage is the same as working with locally stored files in most instances; for example when you stream a recording, it is automatically retrieved from the external storage and converted to the correct format so that this process is transparent to the user. However, there are the following exceptions:

  • Dragging and dropping files between external folders is not possible. However you can copy and move files between folders on the NFS server easily.
  • Re-transcoding of streaming media is not supported. You need to manually upload (web or FTP) the file back to the IP VCR's local disk to re-transcode.

* Cisco is not responsible for the content of third party web sites

This article applies to the following products:

  • Cisco TelePresence IP VCR 2200 / MSE VCR blade

June 22nd, 2011 TAA_KB_92