Veritas-bu

Re: [Veritas-bu] How to properly calculate the Catalog

2009-03-13 13:45:56
Subject: Re: [Veritas-bu] How to properly calculate the Catalog
From: Renee Carlisle <rcarlisle AT serverwarecorp DOT com>
To: Todd Jackxon <netbackup.info AT gmail DOT com>, "Stafford, Geoff" <GStafford AT barclaycardus DOT com>
Date: Fri, 13 Mar 2009 13:20:02 -0400

Keep in mind if you do BMR backups..it adds to the catalog space as well

 

From: veritas-bu-bounces AT mailman.eng.auburn DOT edu [mailto:veritas-bu-bounces AT mailman.eng.auburn DOT edu] On Behalf Of Todd Jackxon
Sent: Friday, March 13, 2009 12:46 PM
To: Stafford, Geoff
Cc: veritas-bu AT mailman.eng.auburn DOT edu
Subject: Re: [Veritas-bu] How to properly calculate the Catalog

 

Thanks Geoff

 

Thanks for pointing out that difference .. I didn't add the Exchange backup totals to the Month-end Fulls.

This would be the same amount as Weekly but only a longer retention.

 

Just seems like a very large amount for some reason (240GB). Seems I am missing something here.

 

Thanks

Jack

 



 

On Fri, Mar 13, 2009 at 12:01 PM, Stafford, Geoff <GStafford AT barclaycardus DOT com> wrote:

That’s the same method I’ve used.  I think there is a little fluff in the 2% and you can also obviously cut this down by compressing the catalog after 30 days or whatever.  The only thing I noticed is you are calculating 30 incrementals per month, I’m assuming you actually do 6 incrementals per week (no incremental on same day as full) so it would be 24 not 30.  Also, just out of my own curiosity, why are your monthly fulls less than your weekly fulls?  I would expect them to be equal or possibly the monthly would be larger if you are including more data.

 

 

Date: Fri, 13 Mar 2009 11:40:35 -0400

From: Todd Jackxon <netbackup.info@gmail.com>

Subject: [Veritas-bu] How to properly calculate the Catalog

To: veritas-bu AT mailman.eng.auburn DOT edu

Message-ID:

      <f7e0214e0903130840o1300e963l20b9c06bd88e9c9 AT mail.gmail DOT com>

Content-Type: text/plain; charset="windows-1252"

 

Hello All,

 

I am trying to use the formula for calculating the catalog and not sure about the results. Has anyone Calculated the catalog using the formula in the Performance Tuning guide?

Can you please explain how to properly do this?

 

1 ? "When the formula states total backups" ... is this for one Full backup of all data for one day?

 

 Schedule

 

Incremental - daily - retention 5 weeks

Weekend Full - retention 6 weeks (only first 3 weekends) Month-End - retention 1 year (last Saturday of the month)

 

Below is my attempt to calculate this. Any clarification would be appreciated.

 

 

-----------------

 

614GB data back up   * 3 Full Backups (1842GB) * 2 months retention (3684GB)

= 3.5 TB

Full

 

 

447GB data back up   * 1 Full Monthly Backup (447GB) * 12 months retention

(5364GB) = 5.2 TB

Month End Full

 

 

122GB

incremental * 30 incr backups monthly (3660GB) * 5 week retention (1.25

months) 4605GB = 3.5 TB

--------------

 

3.5 TB incr

3.5 TB Weekly Full

5.2 TB Month-End Full

 

= 12.2 TB = Netbackup catalog size (2%) =  240GB Catalog space

 

 

 

This does not seem right???

 

Thanks

Jack

 




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