Have you honestly have to recover data (really... except for long-term
retention stuff for legal or whatever) that is older than 2 weeks?

I haven't.

Am I just lucky?

~Kate



-----Original Message-----
From: veritas-bu-admin AT mailman.eng.auburn DOT edu
[mailto:veritas-bu-admin AT mailman.eng.auburn DOT edu] On Behalf Of Paul
Keating
Sent: Wednesday, May 17, 2006 9:05 AM
To: veritas-bu AT mailman.eng.auburn DOT edu
Subject: RE: [Veritas-bu] Retention Period Question


That ain't gonna work.

You FULL retention must be at least the retention of the daily, plus the
time between FULLs.

In other words, if you're guaranteeing daily aggregation restores for 60
days, and you have a weekly FULL, you need to keep for FULLs for a
minmum of 67 days.

Otherwise when you FULL expires after 61 days, you just lost the ability
to restore from the subsequent incrementals untill the next FULL.....so
assuming Weekly (every 7 days) FULLs with 60 day retention.... after 61
days, you can only restore back to 61-7 =54 days.

If you're gaurateeing dailies for 60 days and you only do monthly FULLs,
you need to keep your FULL for 90 days.....and "just in case" that
oldest FULL goes bad, it's nice to have an extra......so weekly fulls
keep for minimum 2 weeks longer than incrementals....or if you only do
monthly fulls, keep them for 2 months longer than the incrementals.

Paul



-- 


> -----Original Message-----
> From: veritas-bu-admin AT mailman.eng.auburn DOT edu
> [mailto:veritas-bu-admin AT mailman.eng.auburn DOT edu] On Behalf Of 
> Justin Piszcz
> Sent: May 16, 2006 9:40 AM
> To: DLew97
> Cc: veritas-bu AT mailman.eng.auburn DOT edu
> Subject: Re: [Veritas-bu] Retention Period Question
> 
> 
> Most people run a full backup weekly and then incrementals in between 
> and then set your FULL retention to 60 days.  Consider what happens if

> 1 full went bad? You would be out many weeks of data!
> 
> Also, that is a bad way of doing things, 1 full every 4 weeks and X 
> number of incrementals? You'll spend a VERY long time restoring the 
> incrementals after you restore the full backup.

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