Hi,
As a followup and potential clarification, if you want to do backups over
the LAN of NDMP data, you have three types of options. I'll use Celerra as
an example:
1. Backup over LAN from one Celerra to another that has a tape drive.
For instance, if you have two Celerras, with only one that has a connection
to to a tape drive, you could back one up over the LAN to the other.
The tape drive on the first Celerra certainly could be shared as part of an
existing changer; you'll need DDS licenses for that, and fibre connect (I'm
assuming) the Celerra using an available port.
Licenses: 2 NDMP Client licenses.
2. Backup over LAN to NetWorker 7.1.x host.
You would install NDMP Tape Server(Windows)/Snapimage(Unix) software, and
dedicated one + tape drives on your server/storage node as NDMP tape
drives. You could have that drive be NDMP, of course.
Negatives: NDMP Tape Server/Snapimage is NDMP rev 2, which means no cloning.
Licenses: As above, plus NDMP Tape Server/Snapimage
3. Backup over LAN to NetWorker 7.2 host.
NetWorker 7.2 builds the NDMP Tape Server into nsrmmd directly (versus
remotely, as in the other examples), so you don't need to install NDMP Tape
Server/Snapimage to have NetWorker receive backups.
Also removes the single stream limitation of NDMP data when nsrmmd is
writing it to tape (multiplexing is supported directly by nsrmmd, since the
NDMP Tape Server is built into it). Some other stuff too, but that is the
most important.
Licenses: 2 NDMP Client licenses. I do not believe that you have to license
anything to get NDMP support via nsrmmd. (I'm not 100% on that last item,
but I'm pretty sure about it)
Dave
Date: Wed, 2 Mar 2005 15:26:57 -0800
From: Michael Coxe <mcoxe AT OPSWARE DOT COM>
Subject: Re: New EMC Celerra - want to backup via NDMP
Thanks to all that replied, including a few offlist. Celerra
NDMP backups work over IP as the do with Netapps, though from
the EMC docs you'd be hard pressed to know.
I'm pretty sure I have the Legato side down, with the required
ENV settings, but there's Celerra side work to be done. Backup
specific parameters must be set, etc. Awaiting a callback from
our EMC SE.
Reiterating:
We've been backing up Netapps via NDMP for years, so yes we
have an appropiate amount of NDMP client licenses and
SnapImage installed and operating.
- michael
===================================
David Gold
Sr. Technical Consultant
Cambridge Computer Services, Inc.
Artists in Data Storage
Tel: 781-250-3000
Tel (Direct): 781-250-3260
Fax: 781-250-3360
dave AT cambridgecomputer DOT com
www.cambridgecomputer.com
===================================
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