Veritas-bu

[Veritas-bu] stupid question about retention periods

2002-12-21 11:03:49
Subject: [Veritas-bu] stupid question about retention periods
From: duncan.greenwood AT btinternet DOT com (Duncan Greenwood)
Date: Sat, 21 Dec 2002 16:03:49 -0000
>> Still doesn't explain why "infinite" retentions show a date of 2038 in
reports... 2147483647 should be more like 68 years, not 36.

I found this explanation of the "Year 2038" issue ...

"In all Unix and POSIX-compliant operating systems, times and dates are
represented internally as the number of seconds
since the UNIX 'epoch', which was the 1st of January 1970 GMT.

32-bit systems can only store a maximum of 2^31 non-negative seconds
(2,147,483,648 seconds or about 68 years). Which
means that 32-bit systems won't be able to process time beyond 19 Jan 2038
at 3:14:07 AM GMT.

One of the common solutions will be to switch to 64-bit architecture systems
that can store a maximum of 263 non-negative
seconds (9,223,372,036,854,775,808 [9.2 Quintillion] seconds or about 292.27
Billion years), which is about 22 times the
estimated age of our universe!"

D
#

----- Original Message -----
From: <scott.kendall AT abbott DOT com>
To: "Suzanne Palmer" <s.palmer AT umassp DOT edu>
Cc: <veritas-bu AT mailman.eng.auburn DOT edu>
Sent: Saturday, December 21, 2002 12:11 AM
Subject: Re: [Veritas-bu] stupid question about retention periods


> take a look under the covers and you'll see it's all based on seconds.
> /usr/openv/netbackup/db/config/user_retention
>
> with "1 month" they error long instead of short and base it on 31 days...
2678400 seconds
>
> ... kind of explains a few things, like why a backup on Feb 1 held for "1
> month" is still available first several days of Mar.  Still doesn't
> explain why "infinite" retentions show a date of 2038 in reports...
2147483647 should be more like 68 years, not 36.
>
>
> - Scott
>
>
>
>
>
> "Suzanne Palmer" <s.palmer AT umassp DOT edu>
> Sent by: veritas-bu-admin AT mailman.eng.auburn DOT edu
> 12/17/2002 10:19 AM
>
>
>         To:     veritas-bu AT mailman.eng.auburn DOT edu
>         cc:
>         Subject:        [Veritas-bu] stupid question about retention
periods
>
>
> okay, probably a dumb question, but here goes...
>
> Under retention levels, there are periods of 1 week, 2 week, 3 week,
> then 1 month. What does one month mean exactly? Does it equate to a
> specific number of days, or does it strictly mean per calendar month
> (thereby varying in length as the months vary)?
>
> Thanks,
>
> -Suzanne
> _______________________________________________
> Veritas-bu maillist  -  Veritas-bu AT mailman.eng.auburn DOT edu
> http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
>
>
>


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