>
There is no "Differential" backup, per se, in Arkeia. Only multiple
incremental backup levels.
Standard Definitions:
Incremental = files changed since previous Incremental backup
Differential = files changed since last Full backup
Arkeia does the incremental a little differently.
Incremental backup "level n" = files changed since previous backup "level
n-1"
The idea of backup levels is pretty standard Unix dump format. Things are
different in the NT world where backup "levels" are either Full,
Differential, or Incremental.
So...the following is true in Arkeia:
Level 1 Full = Full backup of all files
Level 2 Incremental = All files changed since Level 1
Level 3 Incremental = All files changed since Level 2
etc.
Incremental backup levels in Arkeia are similar to differential backups in
the NT world but you have alot more control over how granular you want your
backups to be. I think Arkeia allows up to 6 backup levels.
Sean
> -----Original Message-----
> From: Pavel Satny [mailto:psatny@atlas.cz]
> Sent: Monday, October 02, 2000 2:02 PM
> To: arkeia-userlist@arkeia.com
> Subject: Re: [arkeia-userlist] Differential backup
>
>
> Wow!
> now comes my original question again: How did you set your level 2 as
> *differential*.
> I'm looking for that but cannot find it.
>
> Regards,
>
> Pavel.
>
> Sean Brown wrote:
> >
> > I've gotten around this issue by setting multiple backup
> levels. My level 1
> > (Full) backup is run once a month. I set a level 2
> (differential) to run
> > once a week and a level 3 (incremental) to run each day.
> Each backup level
> > will backup files changed since the previous backup level.
> IOW, a level 3
> > backup done on Tuesday will backup all files modified since
> the level 2
> > backup, done on the previous Friday.
> >
> > This works for me...
> >
> > Sean Brown, System Administrator
> > Applied Geographics, Inc.
> > 100 Franklin St.
> > Boston, MA 02110
> > srbrown@appgeo.com
> >
> > > -----Original Message-----
> > > From: Pavel Satny [mailto:psatny@atlas.cz]
> > > Sent: Sunday, October 01, 2000 1:21 PM
> > > To: arkeia-userlist@arkeia.com
> > > Subject: Re: [arkeia-userlist] Differential backup
> > >
> > >
> > > Hi,
> > >
> > > Well, as far as I know any incremental backup causes
> backup of those
> > > files,
> > > which have their modification time somewhere between previous
> > > incremetal
> > > or higher level (if it is the first incremental after higher level
> > > backup).
> > > That means if I do incremental backups daily, then each
> of them will
> > > contain
> > > data which were added and changed during the day.
> > >
> > > But what will happen if I bring some old tar archive and untar it?
> > > Untarred files will have the original mtime. That means I will add
> > > some old dated files to the system.
> > >
> > > Question is if incremental backup saves them or not. Probably not.
> > > Is there some solution for that? The only way I know is using
> > > "differential"
> > > backups, which should also look for new files which were never
> > > backed-up.
> > > Or am I wrong? Correct me if so, please.
> > >
> > > Now and again, the question is: Does arkeia know how to preform
> > > diff. backups and how can I set it?
> > >
> > > Regards,
> > >
> > > Pavel.
> > >
> > >
> > > Loren Coe wrote:
> > > >
> > > > > I have one (maybe stupid) question. Where can I schedule
> > > differential
> > > > > periodic backups? I was quite a long time looking for
> > > that option, but
> > > > > it seemes that arkeia knows only "full backup" and
> "incremental
> > > > > backups",
> > > > > but no "differential" backups like shown in the documentation.
> > > >
> > > > i would expect that incremental = differential. but i have
> > > > never heard of differential, so YMMV.
> > > >
> > > > --Loren
> > > >
> > > > >
> > > > > I use free version.
> > > > >
> > > > > Kind Regards,
> > > > >
> > > > > Pavel.
> > > > > --------------4930E10FF60AD52121C32855
> > > > > Content-Type: text/x-vcard; charset=iso-8859-2;
> > > > > name="pavel.vcf"
> > > > > Content-Transfer-Encoding: 7bit
> > > > > Content-Description: Card for Pavel Satny
> > > > > Content-Disposition: attachment;
> > > > > filename="pavel.vcf"
> > > > >
> > > > > begin:vcard
> > > > > n:Satny;Pavel
> > > > > tel;cell:+420-604-829115
> > > > > x-mozilla-html:FALSE
> > > > > adr:;;;;;;
> > > > > version:2.1
> > > > > email;internet:psatny@atlas.cz
> > > > > title:Ing.
> > > > > x-mozilla-cpt:;0
> > > > > fn:Pavel Satny
> > > > > end:vcard
> > > > >
> > > > > --------------4930E10FF60AD52121C32855--
> > > > >
> > > > > ________________________________________
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> > >
> > > --
> > > Pavel Satny
> > > psatny@atlas.cz
> > > +420-604-829115
> > >
> > ________________________________________
> > To be added or removed
> > Please visit http://www.arkeia.com/arkeialist.html
> > ________________________________________
>
> --
> Pavel Satny
> psatny@atlas.cz
> +420-604-829115
>
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