Networker

Re: [Networker] NDMP for NAS devices- do you like it?

2004-02-13 09:29:32
Subject: Re: [Networker] NDMP for NAS devices- do you like it?
From: "Wood, R A (Bob)" <WoodR AT CHEVRONTEXACO DOT COM>
To: NETWORKER AT LISTMAIL.TEMPLE DOT EDU
Date: Fri, 13 Feb 2004 14:28:12 -0000
The NDMP process does a snapshot to back up from. 

If you do a snap list vol0 when a backup is running on vol0 you will see
in the list a snapshot_for_backup.12345 

This snapshot, I understand, is a snapshot of currently used blocks. I'm
really not sure if this includes the other snapshots... I'm pretty sure
that it doesn't. Any one out there can enlighten?

Bob

-----Original Message-----
From: Legato NetWorker discussion [mailto:NETWORKER AT LISTMAIL.TEMPLE DOT EDU]
On Behalf Of Staszewski, Beth
Sent: 13 February 2004 13:16
To: NETWORKER AT LISTMAIL.TEMPLE DOT EDU
Subject: Re: [Networker] NDMP for NAS devices- do you like it?


Will this work for snapshots also?  If not how are you backing up your
snapshots?

Beth Staszewski
Network Engineer

Teachers Credit Union
110 South Main Street
South Bend, IN 46601

Office:  (574) 284-6413
Fax:     (574) 284-6384



-----Original Message-----
From: Itzik Meirson [mailto:imeirson AT MBI.CO DOT IL]
Sent: Thursday, February 12, 2004 6:19 PM
To: NETWORKER AT listmail.temple DOT edu
Subject: Re: [Networker] NDMP for NAS devices- do you like it?

I second Bob's comments.
>From my perspective I tend to break down the savesets to more
manageable/recoverable. This means to have the single saveset size in
the range of 100-200GB. You could use second level directories or qtrees
as the saveset. It is true that this imposes some administrative and
management overhead but then it make life easier. A new feature with NW
7.1 is to specify ALL (for Netapp) as the saveset and Networker will
automagically find out what volumes are defined and back them up all
with the number of streams that correspond to your number of NDMP drives
and NAS Networker client parallelism setting. Itzik

> -----Original Message-----
> From: Legato NetWorker discussion
[mailto:NETWORKER AT LISTMAIL.TEMPLE DOT EDU] On Behalf Of Wood, R A
> (Bob)
> Sent: Thursday, February 12, 2004 17:23
> To: NETWORKER AT LISTMAIL.TEMPLE DOT EDU
> Subject: Re: [Networker] NDMP for NAS devices- do you like it?
>
> Stan,
>         Let me take the questions one at a time,
> do you do full backups of your NatApp device nightly? No, we do full
at
> weekend and level 1 through 5 Monday to Friday.
>
> How much data is backed up on a typical night    1.3TB for full avg
> 350-400GB weeknight
>
>  and can you recover individual NetApp files?   Yes
> If so, how long does it take to get back a NetApp file from tape via
the
> NDMP protocol? Before we set the 'direct=y' option it took up to 30 
> hours to restore from a 750GB saveset, now it is less (don't have 
> figures to hand right now).
>
> As an aside, I'm working at reducing the size of the datasets for
backup
> by selecting savesets further down the tree (this will mean a
management
> overhead to make sure that everything is covered but should speed up 
> recovery time).
>
> Regards
> Bob
>
> -----Original Message-----
> From: Stan Horwitz [mailto:stan AT temple DOT edu]
> Sent: 12 February 2004 14:42
> To: Wood, R A (Bob)
> Cc: Legato NetWorker discussion
> Subject: RE: [Networker] NDMP for NAS devices- do you like it?
>
>
>
> On Thu, 12 Feb 2004, Wood, R A (Bob) wrote:
>
> >Stan,
> >       We're using NDMP and 7.1.1 haven't noticed any difference from
> 6.1.3
> >yet. We have NetApp connected to dedicated library right now but
intend
>
> >to connect to fabric and use shared library in the near future.
>
> Just out of curiosity, do you do full backups of your NatApp device 
> nightly? How much data is backed up on a typical night and can you 
> recover individual NetApp files? If so, how long does it take to get 
> back a NetApp file from tape via the NDMP protocol?
>
> --
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