[Veritas-bu] Meaning of 1 Month retention level?

2005-08-04 16:05:44
Subject: [Veritas-bu] Meaning of 1 Month retention level?
From: M.W.Ellwood AT DOT uk (Ellwood, MW (Mike))
Date: Thu, 4 Aug 2005 21:05:44 +0100
Many thanks Robert; very useful.
I knew about the bpretlevel [-l] command, but I hadn't spotted that column 2 
was the time in seconds! Doh!
Thanks again,


From: Stump, Robert (Contractor) (J6B) [mailto:Robert.Stump.ctr AT dla DOT mil]
Sent: Thu 04/08/2005 18:32
To: Ellwood, MW (Mike); veritas-bu AT eng.auburn DOT edu
Subject: RE: [Veritas-bu] Meaning of 1 Month retention level?

What does the retention level of one month represent by default (in
number of days)?

A retention level of one month is by default 31 days. Please note that
this can be changed. Please see TechNote 267037
( ) for information on what file
is updated if the retention level has been changed.

To determine the value for the retention level, run the following

# bpretlevel -l
0 604800 1 week
1 1209600 2 weeks
2 1814400 3 weeks
3 2678400 1 month
4 5356800 2 months
5 8035200 3 months
6 16070400 6 months
7 24105600 9 months
8 31536000 1 year
9 2147483647 infinite
10 2147483647 infinite
11 2147483647 infinite
12 2147483647 infinite

The second column is in seconds, so for example, a retention level 3 = 1
month or 2678400 seconds = 31 days.

Related Documents:

267037: When changing the retention period of a retention level, what
file is created/updated to record the new parameters?

-----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 Ellwood,
MW (Mike)
Sent: Thursday, August 04, 2005 1:04 PM
To: veritas-bu AT eng.auburn DOT edu
Subject: [Veritas-bu] Meaning of 1 Month retention level?

I thought I had read that a retention period of "1 month" was
interpreted by Netbackup as "31 days".

I only recently realised that you could set the RL to mean an exact
number of explicit days.
We used to have our standard RL of 3 set to "one month", and as an
experiment I changed it To "28 days".

We did some backups, and now wanted to recalculate those back to "1

I changed the meaning of RL=3 back to one month, and recalculated
certain backups.

I'm not 100% sure, but it looks to be like it might be interpreting this
as one calendar month.

(I have yet to see how it will interpret the RL for new backups)

Any one with any extensive experience of this sort of thing?

(nb, we happen to be on a rather old level, 3.4GA)


Mike Ellwood
 R27-F33 Atlas Centre
CCLRC Rutherford Appleton Laboratory
Chilton, DIDCOT, Oxon, OX11 0QX
Tel: +44 (0)1235 446161    Email: m.w.ellwood AT DOT uk

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