On May 13, 2011, at 7:04 AM, Davis, Adrian wrote:

> I'm persistently getting a "Return code 653 unknown" error when running 
> backups.
> ...

You don't specify your platform, but it's likely Windows, where the list 
archives show that having been encountered by others.
That would be Windows error ERROR_SYSTEM_HIVE_TOO_LARGE, which suggests a 
Registry problem, where a Registry scan may be in order.  Your Windows Event 
Log may have an entry on it.  Note that vendor software is programmed to deal 
with relatively common system error conditions, but not those which are far 
afield.  If Windows analysis tools don't turn up the issue, you may contact TSM 
Support for guidance.

  Richard Sims

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