ADSM-L

Re: Exactly when DO backup versions expire?

1998-09-23 15:46:20
Subject: Re: Exactly when DO backup versions expire?
From: "Glass, Peter" <Peter.K.Glass AT NORWEST DOT COM>
Date: Wed, 23 Sep 1998 14:46:20 -0500
Thanks, this helps,
...But, if I back up a file only once, and do not ever delete the file on my
workstation, will the backup copy still expire when the Retonly time is up,
or will it remain unexpired indefinately, as long as I don't delete the
version from my workstation. I've heard several people say that ADSM never
expires your only backup copy, as long as you don't delete it from your
workstation, but I haven't seen this explicitly stated in the Admin Guide.

> -----Original Message-----
> From: rbs AT bu DOT edu [SMTP:rbs AT bu DOT edu]
> Sent: Wednesday, September 23, 1998 12:47 PM
> To:   Peter.K.Glass AT NORWEST DOT COM
> Subject:      Exactly when DO backup versions expire?
>
> RETExtra                              Backup Copy Group operand defining
> the
>                                       retention period, in days, for all
> but
>                                       the latest backup version.
>                                       The RETExtra "clock" for a
> particular
>                                       backup version does not start
> ticking
>                                       until the next backup version is
>                                       created.  That is, if you back up a
> file
>                                       on January 15, 1997, but don't back
> it
>                                       up again until March 1, 1997, the
> first
>                                       backup version (created on January
> 15)
>                                       is eligible for expiration on March
> 31
>                                       (30 days after the March 1 backup
>                                       version was taken).
>                                       When the file is deleted from the
>                                       client, the RETExtra copies will
>                                       persist, and will continue their
>                                       expiration countdown: they do not
>                                       immediately disappear because the
> client
>                                       file was deleted.
>                                       RETExtra=NOLIMIT setting will cause
>                                       the next-most recent copy to also be
>                                       kept indefinitely (until the next
> backup
>                                       version is created, in which case it
> is
>                                       expired due to the VERExists
> setting).
>                                       Keep in mind that VERExists
> overrides
>                                       the RETExtra value in causing an old
>                                       generation to be discarded.
>                                       See also "VERDeleted".
> RETOnly                                       Backup Copy Group operand
> defining the
>                                       retention period, in days, for the
> sole
>                                       remaining backup version of a file
>                                       deleted from the client file system.