I wasn't referring to vaulting tapes. I was referring to the primary
copy. We duplicate everything, this checks the images for integrity, as
well as providing another copy of the tape.

I've had to recover things for legal reasons in excess of 2 years old...
which gets really fun if the system name has changed or the O/S or
whatever. 

But, as to day-to-day restores, I've never really had to recover
anything more than a few days old.



-----Original Message-----
From: Justin Piszcz [mailto:jpiszcz.backup AT gmail DOT com] 
Sent: Wednesday, May 17, 2006 9:58 AM
To: Greenberg, Katherine A
Cc: Paul Keating; List Veritas List
Subject: Re: [Veritas-bu] Retention Period Question


Yes I have and when a tape goes bad from one backup, it is *EXTREMELY*
important to have that secondary backup copy.

On 5/17/06, Greenberg, Katherine A <GreenbergKA AT aetna DOT com> wrote:
> 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.
>
> -----------------------------------------
> This e-mail may contain confidential or privileged information.  If 
> you think you have received this e-mail in error, please advise the 
> sender by reply e-mail and then delete this e-mail immediately.  Thank

> you.  Aetna
>
>
> _______________________________________________
> Veritas-bu maillist  -  Veritas-bu AT mailman.eng.auburn DOT edu 
> http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
>