By the way - an interesting option could be to use FlexClone instead of breaking the mirror - you clone the mirrored volume, and then you change its minra setting.

 

By the way - if you're not using very large aggregates on the R200 that might your ultimate cure - you wanna have many disks involved in the I/O.

 

Eyal.

 

On 9/1/06, Peter D. Gray <pdg@uow.edu.au> wrote:

On Fri, Sep 01, 2006 at 08:47:01AM -0500, Callaway, Michael wrote:
> Quote:
> "My NDMP tape backups from the R200 are pretty slow. I average
> about 2 MBytes per sec. Note that backups of other volumes
> on the R200 work really well, so there is no problem
> on the R200 or the network."
>
> Your 2MB/sec sampling, when was that taken?  Was it at the beginning,
> middle, end of the backup?  You -should- be getting a really slow
> through-put rate at the start of a backup, since ndmp basically walks
> through and takes a look at each file before actually backing them up.
> When you have a large volume it will take a while to look at each file,
> it's worse with volumes that have a large number of small files.
>

Good thought, but no.

The backup is slow after the metadata dump is finished.

Peak is slow as well (5 Meg or so).

Regards,
pdg

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