On Wed, Jun 03, 2009 at 04:54:06PM -0400, RKastner wrote:
> i have to restore NDMP backups (several TB) made from an EMC Celerra
> to a Netapp filer. I know, this kind of restore is not supported by
> Netbackup and all other backup software vendors. It's an issue of all
> the different vendor NDMP implementations.  But, has someone found a
> practical solution for this ? Maybe with some third party products.

The problem is that the NDMP host is free to use any format for the
backup, so Netbackup can't guess and try to interpret it.  You also have
the problem that an NDMP host may have odd metadata that is stored.  How
do you restore it?  (may not be possible)

I've heard (but have no personal evidence) that the celerra NDMP stream
is tar-like.  You could try pulling the blocks off the image into a
file, then feeding it to gnutar and see if it can recognize the data.  

Actually, I just found a Celerra backup document that suggests that
possible formats are 'tar', 'cpio', and 'emctar'.  I don't know what the
last one is, but I'd try gnutar first.  It's nice that it will skip the
NBU header on the tape stream and try to find the tar information later.
If it's cpio, you're going to have to remove that header yourself.

Oh, and in case it's not obvious, none of this is an "NDMP restore".
You're going to have to do this on a computer, then pump the data back
into the netapp.  

-- 
Darren
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