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Differential backups with CPS selections

Updated: 28 Jul 2010 | 8 comments
Stix's picture
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We recently installed CPS and we're replicating data from a file server.

When we run a differential on the CPS destination, it seems to include all the data so it seems to be a full backup, not a differential.

Do differential backups on CPS selections work the same as normal selections? 

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Stix's picture
20
Jan
2010
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 Anyone? Last night the CPS

 Anyone?

Last night the CPS differential backup was 341 GB.  The night before it was 610 GB.  How can that be????

Stix's picture
21
Jan
2010
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 Bump...anyone?

 Bump...anyone?

Darren Goobey's picture
21
Jan
2010
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Using modified time

Have you configured the Full backup and the Differential backup to use the modified time option? http://seer.entsupport.symantec.com/docs/282628.htm

Stix's picture
21
Jan
2010
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 Brilliant...exactly what I

 Brilliant...exactly what I was after.  Thanks!

Stix's picture
25
Jan
2010
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 So I took a full backup of

 So I took a full backup of the CPS Protected Resources on the weekend using modified time, but the differential last night was huge and there is no way that that amount of data was changed.

Can anyone help?  What does selecting the protected resources node do anyway?  Can I just select the backup destination folder instead?  The media server is local to the CPS destination but the backup is a lot slower compared to a backup of a local drive.

Please help!

Stix's picture
26
Jan
2010
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Bump

 

Stix's picture
26
Jan
2010
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When I select a file to back

When I select a file to back up in the CPS destination location, it backups the folder but not the file.  What is going on? 

Stix's picture
26
Jan
2010
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 Never mind - got it.  You

 Never mind - got it.  You have to stop the CPS services before backing up the CPS destination location. :)

In the CPS admin guide, it says not to do a regular backup of the CPS Protected Resources node given that it contains a lot of redundant data.

I will use this article http://seer.entsupport.symantec.com/docs/288626.htm to configure pre/post commands for the backup of the CPS destination data.  Hopefully tonight it will be nice and quick.