As Mikhail states changing the RL setting within a policy only changes backups from that point on.
Changing RL period for the RL itself changes it for all items with that RL. Although the RL has a period listed it is actually the RL number you see that is
stored so changing the RL’s period changes it for all backups with that RL number.
Note that there are multiple retention levels available and the period can be changedon each so you can have multiple RLs with the same retention period.
For example in our environment we only keep our on site backups on deduplication appliance so all the RLs we define for use of the original backups have 2 weeks.
The reason we use multiple RLs each with 2 weeks is because we then vault the images to tape to be sent offsite and have varying offsite retention policies
(e.g. 3 months, 9 months, 1 year, infinity). Vaulting allows one to map the original image RL to a separate duplication RL.
From: veritas-bu-bounces AT mailman.eng.auburn DOT edu [mailto:veritas-bu-bounces AT mailman.eng.auburn DOT edu]
On Behalf Of Mikhail Nikitin
Sent: Friday, July 18, 2014 8:53 AM
To: Linda Boughner
Cc: VERITAS-BU AT MAILMAN.ENG.AUBURN DOT EDU
Subject: Re: [Veritas-bu] Netbackup change policy attribute question
There is no contradiction between your understanding and bpexpdate -recalculate.
The original question was about policy settings (not retention levels) and change in the policy will not be propagated. The change in retention levels will be propagated but will affect all backups of all policies which are using the affected retention level.
So if expiration date need to be changed for a subset of images covered by one policy the right way to do it is using the bpexpdate -recalculate command with -policy switch.
WBR, Mikhail
On 18/07/2014 9:48 PM, "Linda Boughner" <Linda.Boughner AT durham DOT ca> wrote:
No, but it is my understanding that if you change the Retention Period for a Retention Level under Master Server Host Properties, that will change the period for all existing images, regardless of the policy,
backed up under that level.
FYI,
Linda
-----Original Message-----
From: veritas-bu-bounces AT mailman.eng.auburn DOT edu [mailto:veritas-bu-bounces AT mailman.eng.auburn DOT edu] On Behalf Of Mikhail Nikitin
Sent: July-17-14 10:30 PM
To: VERITAS-BU AT MAILMAN.ENG.AUBURN DOT EDU
Subject: Re: [Veritas-bu] Netbackup change policy attribute question
Hi,
No, NetBackup does not propagate changes in retention retrospectively.
If you need to change retention of existing images, you need to run bpexpdate with the -recalculate switch for the images in question.
On 3 Jul 2014, at 3:56 am, settler <nbu-forum AT backupcentral DOT com> wrote:
> If I change the retention attributes on an existing policy, do the retention attributes apply to that which was backed up prior to making the change? e.g. if I change retention attributes from 1 year, to 45 days, will data older than 45 days that has been
backed up prior to making the policy change expire out naturally. Conversely, if I change the attributes from 45 days to 1 year, will the data that was backed up prior to the policy change abide to the new policy.
>
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