On Mon, 7 Mar 2005, Rob Haig wrote:

>We're looking at buying some Centera frames from EMC.  Our volume needs
>make replication cost prohibitive, (both in hardware and offsite hosting
>space) so we're looking at an offsite library that could do (almost
>constant) NDMP backups of the data we'll be loading into the Centera.
>The sales guy we're working is pushing replication (hmmm....) and
>doesn't think that an NDMP client can push enough data for us (we'd need
>to sustain about 40MB/s to keep up with our forecast needs).

The best I have seen with our Mirapoint message stores backing up to a
Sony PetaSite Sony S-AIT drives is 11MB/s on a system that had no other
activity on it at the time with NetWorker 7.1.x connected via a fibre
bridge to a Sunfire v480 with plenty of RAM and CPU Power to spare.  We
tried various things and no matter what we do, such as switching the
Mirapoint box from a 100MB line to a GB line, the throughput is a steady
11MB/s. Our backup hardware can sustain much faster speeds, no problem, as
can our network.

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