Re: [Veritas-bu] Advice & Help - Linux Server 14TB
2012-04-12 19:53:28
I don't (necessarily) see a problem here.
My file system is some 16TB large, it is mostly just a standard file
system, but it also has an area dedicated to a MySQL database - our 8TB
synthetic only backs-up part of this filesystem, ignoring the MySQL database
folders and some other, non-important folders.
Depending on how your volume/s are configured,
there's nothing stopping you configuring a synthetic backup that incorporates
only those root level (or even deeper) folders/directories that you want
to backup this way and ignoring the rest.
Of course I don't know your volume folder
structure but its certainly possible (we do it), and its very efficient.
And you can then have a separate backup for your Oracle db; indeed
you could have a couple or more synthetics if there's a natural way to
break it up.
PS If your Oracle dba/s would/can
configure the database to backup to file/s then you don't have to worry
about shutting down the database, and you can incorporate the files in
your synthetic backup scheduling. We don't backup our MySQL database
at all, but the backups to file are.
From:
"Simon Weaver"
<Simon.Weaver AT iscl DOT net>
To:
"stefanos"
<smpt1 AT peppas DOT gr>, "Mark Phillips" <Mark.Phillips AT unisa.edu DOT au>,
<JCrowe AT marketforce.com DOT au>,
Cc:
veritas-bu AT mailman.eng.auburn DOT edu,
veritas-bu-bounces AT mailman.eng.auburn DOT edu
Date:
12/04/2012 04:36 PM
Subject:
Re: [Veritas-bu]
Advice & Help - Linux Server 14TB
Sent by:
veritas-bu-bounces AT mailman.eng.auburn DOT edu
Oracle is on here as well :-(
From: veritas-bu-bounces AT mailman.eng.auburn DOT edu
on behalf of stefanos
Sent: Thu 12/04/2012 08:38
To: 'Mark Phillips'; JCrowe AT marketforce.com DOT au; Simon Weaver
Cc: veritas-bu AT mailman.eng.auburn DOT edu; veritas-bu-bounces AT mailman.eng.auburn DOT edu
Subject: Re: [Veritas-bu] Advice & Help - Linux Server 14TB
I agree that synthetic backups
are good, but only if you run file backups.
If the system has an oracle,
the synthetic backups are useless.
From: veritas-bu-bounces AT mailman.eng.auburn DOT edu
[mailto:veritas-bu-bounces AT mailman.eng.auburn DOT edu]
On Behalf Of Mark Phillips
Sent: Thursday, April 12, 2012 3:56 AM
To: JCrowe AT marketforce.com DOT au; Simon Weaver
Cc: veritas-bu AT mailman.eng.auburn DOT edu; veritas-bu-bounces AT mailman.eng.auburn DOT edu
Subject: Re: [Veritas-bu] Advice & Help - Linux Server 14TB
I agree. We use synthetic
fulls quite a bit.
They work really well for
large filesystems that have relatively small incremental backups.
If you’re going to tape
you’ll need at least 2 free tape drives for the duration of the synthetic
full backup, one for the last full backup and the other for the one you’re
constructing.
Also it’s best if you’re
able to send incremental backups to staging disk and they remain on the
staging disk when the synthetic full is being constructed, it saves on
tape loading and positioning time.
If the incremental backups
are going to tape avoid multiplexing them, it’ll slow things down.
Also if you’re going to
tape when doing the first conventional full backup don’t multiplex it
– this will make doing the first synthetic full backup slow.
Mark
From: veritas-bu-bounces AT mailman.eng.auburn DOT edu
[mailto:veritas-bu-bounces AT mailman.eng.auburn DOT edu]
On Behalf Of JCrowe AT marketforce.com DOT au
Sent: Thursday, 12 April 2012 9:57 AM
To: Simon Weaver
Cc: veritas-bu AT mailman.eng.auburn DOT edu;
veritas-bu-bounces AT mailman.eng.auburn DOT edu
Subject: Re: [Veritas-bu] Advice & Help - Linux Server 14TB
I would look at synthetics ... not quite
as large as you, but I backup around 8TBs on one linux (RHEL 4) server
over the weekend (every weekend) and it completes in well under 24 hours.
(About 16-20 hours from memory)
The very first backup has to be a full, but once that is out of the way,
you should be able to do a full synthetic every weekend in well under 48
hours (I'm going on what I have above so is just a guess - you may be much
faster than my infrastructure as its nothing flash ... though it is completely
gigabit)
I should add that I've been using synthetics on this particular server
for around 4.5 years now, and they are reliable and fast - unless you have
to "re-seed" the synthetic with an initial full backup; I have
had a few go bad such that I have had to re-seed the backup, but that's
been rare and only happened 2-3 times in all that time. HIGHLY recommended
for large backups.
Cheers
Crowey
From: "Simon
Weaver" <Simon.Weaver AT iscl DOT net>
To: <veritas-bu AT mailman.eng.auburn DOT edu>,
Date: 11/04/2012
09:16 PM
Subject: [Veritas-bu]
Advice & Help - Linux Server 14TB
Sent by: veritas-bu-bounces AT mailman.eng.auburn DOT edu
All
I am hoping you can help....
Im not too familiar with Linux, but we have a RedHat Box, that is a VM
Guest on an ESX Host, that has RDM's totalling 14TB
The backups are done over the LAN - Painfully slow as you can imagine.
Im wondering what options I have in terms of trying to improve performance
for this client. So far its taking close to 3 days to run.
It is on a 1GB Network, as I understand. But does anyone have any suggestions?
Thanks, Si_______________________________________________
Veritas-bu maillist - Veritas-bu AT mailman.eng.auburn DOT edu
http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu_______________________________________________
Veritas-bu maillist - Veritas-bu AT mailman.eng.auburn DOT edu
http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
_______________________________________________
Veritas-bu maillist - Veritas-bu AT mailman.eng.auburn DOT edu
http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
|
|
|