Re: [ADSM-L] Does TSM support 3-way NDMP backups?

I think there may be a lack of clarity with the reference to the link
that Tribe provided.

> Does TSM support 3-way NDMP backups as described here?
> http://www.ndmp.org/info/faq.shtml#9
>

 As I understand it, the TSM server is the NDMP client, the filer is the
NDMP DATA server which then directs it's data stream to the NDMP TAPE
server (not a NAS device)  The NDMP TAPE server can be a process
internal to the filer (to local tape) or the the TSM server (acting as a
NDMP tape server).
I may have the client, data and tape server components mixed up but this
is the general idea that seems to work for me when opening ports through
firewalls to make a NDMP backup of a filer.
   This is also why I like using the windows proxy with the "dsmc ....
-snapdiff" option for backing up CIFS shares.  It is a lot less
confusing for my two brain cells to deal with.

Neil Strand
Storage Engineer - Legg Mason
Baltimore, MD.
(410) 580-7491
Whatever you can do or believe you can, begin it.
Boldness has genius, power and magic.


-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Shawn Drew
Sent: Thursday, October 22, 2009 12:15 PM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: [ADSM-L] Does TSM support 3-way NDMP backups?

Right, which is what the section in the Technical Guide describes.

But you can NOT backup a volume from one NAS to a tape drive connected
to
a second NAS.   Which is what the 3-way spec describes

Regards,
Shawn
________________________________________________
Shawn Drew





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10/22/2009 11:35 AM
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Re: [ADSM-L] Does TSM support 3-way NDMP backups?






Shawn,
   You can set up NDMP backup destination to a TSM server via ethernet
which is nice in that the data can be put in a regular storage pool and
an offsite copy created.  You can also set the NDMP backup destination
to a tape drive(s) physically attached to a filer.  I suspect that you
may also be able to use SAN shared tape drives if your TSM server is
configured as a library manager.  I am using the first configuration -
data txfr through ethernet to the TSM server with good results.
  Another option that makes CIFS share file restores simpler (compared
to NDMP restores) is to set up a windows box which performs the backups
using the "-snapdiff" option.  If your virus scanning servers perform
this backup function, they serve a dual role and don't have to scan
every file as it is backed up.

Cheers,
Neil Strand
Storage Engineer - Legg Mason
Baltimore, MD.
(410) 580-7491
Whatever you can do or believe you can, begin it.
Boldness has genius, power and magic.


-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Shawn Drew
Sent: Thursday, October 22, 2009 11:16 AM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: [ADSM-L] Does TSM support 3-way NDMP backups?

The way TSM does this is in the TSM 5.4 and 5.5 Technical Guide under
the section "10.1.2 Filer-to-server"

They use the NDMPv2 3-way spec to perform this task, which is why they
are calling it "3-way".  The difference is that the library manager is
acting as the destination data mover.
It doesn't look like TSM performs a "3-way" backup where the data can be
routed through a filer destination.


Regards,
Shawn
________________________________________________
Shawn Drew





Internet
r.post AT PLCS DOT NL

Sent by: ADSM-L AT VM.MARIST DOT EDU
10/22/2009 02:34 AM
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Re: [ADSM-L] Does TSM support 3-way NDMP backups?






On 22 okt 2009, at 02:01, Tribe wrote:

> Hi,
>
> I didn't find this in the TSM manual (I'm currently using TSM 5.5) so
> I was hoping to get some help here:
>
> Does TSM support 3-way NDMP backups as described here?
> http://www.ndmp.org/info/faq.shtml#9
>
> I found the term "3-way" in a few TSM docs, but it was used to
> describe an environment with 1 NAS server and the tapes directly
> connected to the TSM server. So this is not what I would call a "3-
> way" setup.
>

since TSM 5.5 this is supported. The documentation on how to configure
it is quite un-IBM like, almost non-existant. I believe that there is
exactly one page in the TSM server admin guide on this topic.

> Thanks,
> Jan
>
> +
> ----------------------------------------------------------------------
> |This was sent by mail AT janseidel DOT net via Backup Central.
> |Forward SPAM to abuse AT backupcentral DOT com.
> +
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--
Met vriendelijke groeten/Kind regards,

Remco Post
r.post AT plcs DOT nl



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