EMC’s backup and recovery team says Hewlett-Packard is playing games with its numbers in claiming its B6200 backup system with StoreOnce Cataylst software is significantly faster than EMC Data Domain arrays with DD Boost.
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HP said its StoreOnce B6200 disk target with Cataylst can ingest data at 100 TB per hour with the maximum of four two-node pairs, compared to EMC’s claim of 31 TB/hour with its new Data Domain DD990 with DD Boost. However, the B6200’s nodes are siloed. That means an eight-node system actually consists of four separate pools, and it would take an aggregate performance to get to 100 TB/hour.
In an email, an EMC backup/recovery spokesman pointed out the DD990 would achieve 620 TB/per hour if measured the same way that HP measures performance. EMC’s 31 TB/hour claim is for a single storage pool but 20 pools can be managed from one Data Domain Enterprise Manager console.
According to EMC’s e-mail, “As lofty as they sometimes seem, we do make a concerted effort to keep our performance claims reasonable and defensible. This announcement by HP was, by contrast, very much a smoke and mirrors effort.”
The truth is that all vendor performance claims – including benchmarks – should be taken with a grain of salt because they are achieved in optimal conditions, often with hardware configurations that would bring the price up considerably. A smart backup admin knows that performance will vary, and these vendor claims need to be verified in real-world tests.