[Babase] Papio Information

Ryan Hardy rh87 at duke.edu
Thu Jun 11 11:28:22 EDT 2009


On Jun 10, 2009, at 6:14 PM, Karl O. Pinc wrote:

> The one important take-away point that differs from the previously
> explained backup plan is that backups are put into the backup system
> only every other day.  We do keep the prior days backup, for 1 day
> only, on disk on papio until it's overwritten by the next days backup.
> So, in case of disaster we could lose 2 days of work.

As it stands, the backups fire off at about 1:00am daily.  However,  
that's not really guaranteed.  From my brief perusal of the logs, it  
looks like papio generally completes around 2:30am or so.  The local  
backup on papio is done through cron.daily, so it should be done  
sometime around 4am.

We could easily change the local backup to occur later in the day  
(say, 11pm) so that it would complete before the tape backups fire  
off.  That would minimize any potential data loss.  Or the script  
could keep multiple copies of the local backup.  The former seems a  
bit less work intensive, but neither would be particularly  
challenging.  As you said, the data storage is really not too much of  
an issue, since the local backups are compressed.

Thoughts?

-Ryan


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