Oh, dammit. You're right (obviously).
I overlooked, that the question was about getting the data faster onto
ONE drive....it's not my day today I think ;)
We use 4 drives to back up two NetApp filers so the splitting-thing
helps a bit in our case.

Thanks for correcting me.

Christian

> On Fri, 13 Sep 2002, Christian Weihs wrote:
>
>> Subject: Re: [Networker] SLOW LTO-drives
>>
>> Hi,
>>
>> I don't know about OnTap 6.2R2 but with earlier versions the maximum
>> bandwith per stream through NDMP was about 12MB/s.
>> Had this problem once. To overcome this limit I simply split the
>> filers savesets (there were two of them) into two client resources and
>> put those into a dedicated NSR group. Each stream now had roughly
>> 12MB/s adding up to 24MB/s.
>>
>> Strange but thats how it worked.
>>
>> christian
>>
>
> Christian,
>
> You can only write a single stream to a tape drive with NDMP so you can
> not ever achieve 25MB/s on a single drive.  This is an NDMP issue.
> Until NDMP supports multiplexing streams to a single drive.  So your
> solution does not solve the original problem of increasing the write
> rate.
>
> Shelley
>
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