Hello,
NDMP is the way to go with backing up filer\NAS Data, i have realized some
admins using NFS mount to backup the files, that may be better then CIFS
mount, however, i would stick with NDMP method.
Curtis Preston <cpreston AT GLASSHOUSE DOT COM>
Sent by: EMC NetWorker discussion <NETWORKER AT LISTSERV.TEMPLE DOT EDU>
08/25/2008 06:20 PM
Please respond to
EMC NetWorker discussion <NETWORKER AT LISTSERV.TEMPLE DOT EDU>; Please respond
to
Curtis Preston <cpreston AT GLASSHOUSE DOT COM>
To
NETWORKER AT LISTSERV.TEMPLE DOT EDU
cc
Subject
Re: enabling compression
I'm ASSUMING that if he's going to back up a NAS server via a CIFS
mount, then he would make the CIFS mount directly to the backup server
that's going to back it up. Mounting it to a client, then backing that
client up across the LAN is just silly.
(Although I've seen plenty of people do it.)
________________________________________________________
Curtis Preston | VP Data Protection
GlassHouse Technologies, Inc.
T: +1 760 710 2004 | C: +1 760 419 5838 | F: +1 760 710 2009
cpreston AT glasshouse DOT com <mailto:cpreston AT glasshouse DOT com> |
www.glasshouse.com <http://www.glasshouse.com/>
Infrastructure :: Optimized
________________________________
From: Matthew.Robert AT au.ey DOT com [mailto:Matthew.Robert AT au.ey DOT com]
Sent: Monday, August 25, 2008 4:17 PM
To: EMC NetWorker discussion; Curtis Preston
Subject: Re: [Networker] enabling compression
This email is to be read subject to the disclaimer below.
Gives you more bandwidth to your backup server so you can increase
parallelism.
Say you max out the NIC on the backup server with 6 streams going at
once, if you enable client side compression, (assume 2:1) you can now
get 12 streams onto your tape drives at once.
Cheers,
Matt
Curtis Preston <cpreston AT GLASSHOUSE DOT COM>
Sent by: EMC NetWorker discussion <NETWORKER AT LISTSERV.TEMPLE DOT EDU>
26/08/2008 08:51 AM
Please respond to
EMC NetWorker discussion <NETWORKER AT LISTSERV.TEMPLE DOT EDU>; Please respond
to
Curtis Preston <cpreston AT GLASSHOUSE DOT COM>
All email is logged and may be reviewed - Refer policy FP105
To
NETWORKER AT LISTSERV.TEMPLE DOT EDU
cc
Subject
Re: [Networker] enabling compression
But now that I think about it, if you're backing up this way, there
really is NO value in using client compression (the directives with
compression), (there hardly ever is).
You're not saving any bandwidth, as all the data will still come across
the network. You're then compressing it with software in NetWorker.
This takes longer and won't be as efficient than just using the tape
drive compression.
Why would you want to do it this way?
Curtis Preston | VP Data Protection
GlassHouse Technologies, Inc.
T: +1 760 710 2004 | C: +1 760 419 5838 | F: F: +1 760 710 2009
cpreston AT glasshouse DOT com | www.glasshouse.com
Infrastructure :: Optimized
-----Original Message-----
From: EMC NetWorker discussion [mailto:NETWORKER AT LISTSERV.TEMPLE DOT EDU] On
Behalf Of kurianv
Sent: Monday, August 25, 2008 2:58 PM
To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
Subject: [Networker] enabling compression
hi,
thanx for the valuable suggestions...but davina how can we force the
tape drives not to compress if we are using "NT with compressed
directives".
thnx,
kurian
davina wrote:
> kurianv wrote:
>
> > hi,
> > sorry i did not tell in detail...actually we are using sdlt tape
drives of 320 GB capacity
> > And whereas in the case of netapp filer..what we have done is that
now we have mapped the drives of filer in a windows server. So now the
client is windows server. And when the backup is taken the maapped
drives of the filers are also backed up....
> >
> > Please can u suggest on the way how we can enable compression in
this case..?
> >
>
> The best compression will come by using the compression of the SDLT
> drives. If you insist on using software compression you do this by
> selecting "NT with compression directives" in the client resource. If
> you do this I suggest that you force the tape drives NOT to compress,
as
> double compressing negates the effect and sometimes ends up backing up
> more data than just using hardware or software compression.
>
> Software compression is (IMHO) best reserved for those cases where the
> client is connected to the storage node via a very slow network
connection.
>
>
> via RSS at http://listserv.temple.edu/cgi-bin/wa?RSS&L=NETWORKER
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