>The biggest gotcha is that with NDMP if a error occurs during the
backup
>it aborts the entire backup.

Yes but not only with NDMP. "Normal" NetWorker backups or using 
modules are working in the same way. The behavior is "better" on NDMP
because only 1 backup session is impacted at a time (no multiplexing on
tape). Non-NDMP backups being multiplexed on tape, you have the same or 
more snowball effect on your backups.

HTH,

Thierry





Kind regards - Bien cordialement - Vriendelijke groeten,

Thierry FAIDHERBE

HP Services - Storage Division
Tru64 Unix and Legato EBS Consultant
                                   
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-----Original Message-----
From: Legato NetWorker discussion [mailto:NETWORKER AT LISTMAIL.TEMPLE DOT EDU]
On Behalf Of Matthew Huff
Sent: Wednesday, February 11, 2004 5:55 PM
To: NETWORKER AT LISTMAIL.TEMPLE DOT EDU
Subject: Re: [Networker] NDMP for NAS devices- do you like it?

The biggest gotcha is that with NDMP if a error occurs during the backup
it aborts the entire backup. There is currently no checkpointing. NetApp
has proposed an extension for NDMP v4 to the IETF for restartable
backups, but no one has implemented it to my knowledge. It isn't in
v7.1.1 of Networker. This means if you have a media error at 1900GB of a
2000GB backup, it aborts and starts over at byte 0. This has been a big
issue with us forcing us to move to a more dependable media (exabyte
M2-> IBM LTO-2) that also is less susceptible to "shoe-shining"

----
Matthew Huff           | One Manhattanville Rd
Director of Operations | Purchase, NY 10577
OTA LLC                | Phone: 914-460-4039 
mailto:mhuff AT ox DOT com    | Fax:   914-460-4139    

> -----Original Message-----
> From: Evan Gold [mailto:egold AT FSA DOT COM] 
> Sent: Wednesday, February 11, 2004 11:45 AM
> To: NETWORKER AT LISTMAIL.TEMPLE DOT EDU
> Subject: [Networker] NDMP for NAS devices- do you like it?
> 
> 
> I am considering using NDMP to backup our NAS devices with 
> legato 7.1.1
> 
> is anyone using it?
> it is easy to use and restore files?
> what legato products do i need to buy to get started?
> 
> im backing up EMC, netapp and bluearc NAS devices.
> 
> thanks!
> Evan
> 
> --
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