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On 18.03.2010 18:28, Darren J Moffat wrote:
> On 18/03/2010 17:26, Svein Skogen wrote:
>>>> The utility: Can't handle streams being split (in case of streams being
>>>> larger that a single backup media).
>>>
>>> I think it should be possible to store the 'zfs send' stream via NDMP
>>> and let NDMP deal with the tape splitting. Though that may need
>>> additional software that isn't free (or cheap) to drive the parts of
>>> NDMP that are in Solaris. I don't know enough about NDMP to be sure but
>>> I think that should be possible.
>>>
>>
>> And here I was thinking that the NDMP stack basically was tapedev and/or
>> autoloader device via network? (i.e. not a backup utility at all but a
>> method for the software managing the backup to attach the devices)
>
> NDMP doesn't define the format of what goes on the tape so it can help
> put the 'zfs send' stream on the tape and thus deal with the lack of
> 'zfs send' being able to handle tape media smaller than its stream size.
How would NDMP help with this any more than running a local pipe
splitting the stream (and handling the robotics for feeding in the next
tape)?
I can see the point of NDMP when the tape library isn't physically
connected to the same box as the zpools, but feeding local data via a
network servce seems to me to be just complicating things...
But that's just my opinion.
//Svein
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