On Thu, 3 Feb 2005, Yura Pismerov wrote:

>
>
> Stan Sander wrote:
>> On Wed, 2 Feb 2005, Stan Horwitz wrote:
>> 
>> 
>>> On Wed, 2 Feb 2005, Stan Sander wrote:
>>> 
>>>> I have the same problem on 7.1 build 230.  I contacted Legato support, 
>>>> but
>>>> have heard abosolutely NOTHING!!!  It's as though they don't even want to
>>>> acknowledge that I exist.
>>> 
>>> What kind of NDMP systems are you working with? I know for a fact that
>>> NDMP recovers work fine with Mirapoint message stores and NetWorker 7.1.2
>>> for image backups. We have done several NDMP recovers in our environment.
>>> 
>>> 
>> 
>> 
>> I have two Netapp F880's and one F840.
>
> BTW, why do you want to use NDMP with Netapp ?
> I understand that you have to use it with such systems as Mirapoint, but with 
> Netapp, would not it better to back up an exported filesystem ?
> IIRC NDMP backups are single stream (unless it was changed recently), so you 
> can not utilize multiple tape drives.

It is true that you do get one stream per volume.  However, if you have 4 
volumes and 4 tape drives, you can get 4 simultaneous streams.  From my 
experience (YMMV) NDMP seems more efficient at moving the data across the 
network vs NFS.  Also, with NDMP you are actually backing up a snapshot, 
so it is done at the block level which means no open file issues.


-- 
Stan Sander - CSU Special Projects  (505)284-4915
ASAP, LLC, Contractor assigned to Sandia National Laboratories
Unix Systems/Server Administrator

Microsoft: You've got questions. We've got a dancing paperclip.

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