| Hi Cristina,
Running benchmarks is very expensive. You have to have all the equipment
together (a tough job when you manufacture the stuff yourself), all the
experts, the right software etcetera.
If you look at our TPC-C results you will notice that the majority of the
results where done with older equipment, like the 350 MHz CPU's. I guess
that now that the competition has come a little closer we could redo the
tests with the faster hardware that we have at the moment to regain the
top position firmly.
I'm told that we are working on the 300GB TPC-D result right now. However,
please keep in mind that each TPC-D database size is the pure data. So,
the 300GB is the amount of records multiplied by the record size. In
practice, you need a lot more disk capacity to store that data (index,
overheads, ..). If I recall well our 100 GB TPC-D result was done on in
total 361.2GB of disk storage, so the ratio (mandatory disclosure) is
3.612.
As an illustration, here's what a customer of mine wrote in an RFP:
- aggregations: 25% on top of raw data;
- indexes and workspace: 200% of raw data plus aggregations;
- RAID5 requirements: 20% of the sum of the above;
- Speed optimization: only 30% of disk space will be used.
This leads to about a factor of 10 to multiply the raw data with to
calculate the total capacity!
Why do I tell you this? Verify how much raw data your customer really has,
it may well be below the 100GB level, in which case we currently have an
excellent TPC-D result.
Cheers,
Henny
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| Hi Henny,
I imagine it is a great effort to publish and audit all these
numbers. Thanks for all the explanation regarding how much
really we need for storage everything.
I only needed a good reason for the many customers who are
asking for bigger TPC-D numbers.
Thanks again,
Cristina.
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| Christina,
HP just published impressive 300 GB TPC-D figures, as Sun did recently.
Our customers actually require comparison numbers. I have questions
related to this at each customer presentation.
Regarding the size, some industries need very large DWs. For the Telecom
industry, 300 GB is a minimum. I was even asked why we don't publish the
1TB TPCD bench.
Pierre-Yves (Telecom IEC)
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