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Providing Secondary Storage at Cloud-Scale: Cohesity Performance Scales Linearly in 256 Node Test Login

Providing Secondary Storage at Cloud-Scale: Cohesity Performance Scales Linearly in 256 Node Test

Are we doomed to drown in our own data? Enterprise storage is growing fast enough with today’s data demands to threaten service levels, challenge IT expertise and often eat up a majority of new IT spending. And the amount of competitively useful data could possibly grow magnitudes faster with new trends in web-scale applications, IoT and big data. On top of that, assuring full enterprise requirements for data protection with traditional fragmented secondary storage designs means that more than a dozen copies of important data are often inefficiently eating up even more capacity at an alarming rate.

Cohesity, a feature-rich secondary storage data management solution based on a core parallel file system, promises to completely break through traditional secondary storage scaling limitations with its inherently scale-out approach. This is a big claim, and so we’ve executed a validation test of Cohesity under massive scaling – pushing their storage cluster to sizes far past what they’ve previously publicly tested.

The result is striking (though perhaps not internally surprising given their engineering design goals).  We documented linearly accumulating performance across several types of IO, all the way up to our cluster test target of 256 Cohesity storage nodes. Other secondary storage designs can be expected to drop off at a far earlier point, either hitting a hard constraint (e.g. a limited cluster size) or with severely decreasing returns in performance.

We also took the opportunity to validate some important storage requirements at scale. For example, we also tested that Cohesity ensured global file consistency and full cluster resilience even at the largest scale of deployment. Given overall test performance as validated in this report, Cohesity has certainly demonstrated it is inherently a web-scale system that can deliver advanced secondary storage functionality at any practical enterprise scale of deployment.

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Publish date: 07/31/17

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