Catalog efficiency is always on the drawing board when regarding future
plans for NetBackup. There is a serious downside to this as well, being
that generally the more efficient you make the catalog, the more complex it
also becomes. Right now, it is very hard to screw up the catalog so bad you
make recovery impossible. When your site blows up, or you migrate master
servers, or add or remove media servers, it's a very easy task. I'm always
100% confident when going into DR tests, or doing conversions, that things
may not always go as planned, but we will be able to make it work. That's a
good thing that I'd like to stay with (but your opinion probably outweighs
mine for future direction). Right now, many customers will add another
master to reduce complexity and increase overall performance long before
they hit an issue with catalog size. We also have customers with one master
and many, many media servers, with a huge catalog who want more efficiency,
and VERITAS is working on that problem.
Thanks,
Gregg Yurchak
VERITAS Professional Services
Biloxi, MS
Cell: 228.324.6939
Office: 228.575.6299
-----Original Message-----
From: Jeff Kennedy [mailto:jlkennedy AT amcc DOT com]
Sent: Monday, November 26, 2001 12:51 PM
To: larry.kingery AT veritas DOT com
Cc: veritas-bu AT mailman.eng.auburn DOT edu
Subject: Re: [Veritas-bu] NBU master server catalog size concerns
Larry,
Does Veritas have any plans to make the catalogue more efficient? I
have figured that the catalogue takes about 3% of the total data backed
up, which can be huge in current environments and it will do nothing but
get bigger. I realize that compression is an option but that can lead
to issues in time to restore, which is why we backup in the first
place.....
Thanks.
~JK
Larry Kingery wrote:
>
> The master size can become an issue. At around 20GB, it can take an
> hour or so to backup (or restore), and during that time no backups can
> be initiated. When it gets to the point where it will no longer fit
> on a single tape, you have to add a second step to the database backup
> process.
>
> The layout of the "database" is just a hierarchy of files. There are
> of course a few which are critical in that they affect the whole
> system, but the vast majority (both in size and number) have no
> dependence on each other. They're just files, and if one gets dinged
> you can restore it from backup, or scan the tape, etc.
>
> You've got a long time before you have anything to worry about.
> Personally, I'd take some time to walk through the DR process (chap 5,
> troubleshooting guide) and make sure your catalog backups are
> configured correctly and restorable, and document the process in your
> own words.
>
> chad.haywood AT storability DOT com writes:
> > Hi,
> >
> > As someone familiar with Legato Networker 5.x index stability issues, I
> > was concerned to learn that a Netbackup 3.4 master server I recently
> > assumed responsibility for has a master server catalog size of 1.6 Gig
due
> > to NFS mounted backups. In a Networker environment I would have made
> > shrinking this a major priority to avoid likely headaches should a DR
> > situation arise. From those of you with more Netbackup experience, is
the
> > master catalog size a major issue in a DR situation? Obviously it will
> > impact the time needed to recover the master's catalog, but how likely
is
> > it to cause difficult to resolve issues due to corruption or other
> > problems?
> >
> > Thanks,
> > Chad
> >
> > Chad Haywood
> > Senior Solutions Engineer
> > Storability, Incorporated
> > www.storability.com
> > _______________________________________________
> > Veritas-bu maillist - Veritas-bu AT mailman.eng.auburn DOT edu
> > http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
>
> --
> Larry Kingery
> It's not if, it's when and how hard
> _______________________________________________
> Veritas-bu maillist - Veritas-bu AT mailman.eng.auburn DOT edu
> http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
--
=====================
Jeff Kennedy
Unix Administrator
AMCC
jlkennedy AT amcc DOT com
_______________________________________________
Veritas-bu maillist - Veritas-bu AT mailman.eng.auburn DOT edu
http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
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