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There’s no need to wait for higher speed. Server builders can take advantage of 12Gb/s SAS now. And this is even as HDD and SSD makers continue to tweak, tune and otherwise prepare their 12Gb/s SAS products for market. The next generation of 12Gb/s SAS without supporting drives? What gives?

It’s simple. LSI is already producing 12Gb/s ROC and IOC solutions, meaning that customers can take advantage of 12Gb/s SAS performance today with currently shipping systems and storage.  As for the numbers, LSI 12Gb/s SAS enables performance increases of up to 45% in throughput and up to 58% in IOPS when compared to 6Gb/s SAS.

True, 12Gb/s SAS isn’t a Big Bang Disruption in storage systems; rather it’s an evolutionary change, but a big step forward.  It may not be clear why it matters so much, so I want to briefly explain.  In latest generation PCIe 3 systems, 6Gb/s SAS is the bottleneck that prevents systems from achieving full PCIe 3 throughput of 6,400 MB/s.

With 12Gb/s SAS, customers will be able to take full advantage of the performance of PCIe 3 systems.  Earlier this month at CeBIT computer expo in Hanover, Germany, we announced that we are the first to ship production-level 12Gb/s SAS ROC (RAID on Chip) and IOC (I/O Controllers) to OEM customers.  This convergence of new technologies and the expansion of existing capabilities create significant improvements for datacenters of all kinds.

12Gb/s SAS is required to take full advantage of PCIe 3.0 performance.

At CeBIT, we demonstrated our 12Gb/s SAS solutions with the unique DataBoltTM feature and how, with DataBolt,  systems with 6Gb/s SAS HDDs can achieve 12Gb/s SAS performance.

CeBIT Demo – PCIe 3, 12Gb/s SAS system, using 6Gb/s HDDs

DataBolt uses bandwidth aggregation to create throughput performance acceleration.  Most importantly, customers don’t have to wait for the next inflection in drive design to get the highest possible performance and connectivity.

With 6Gb/s SAS, the maximum throughput of PCIe 3 cannot be attained. SAS is a bottleneck (Left). LSI 12Gb/s SAS clears the SAS bottleneck, enabling full PCIe 3 performance (Right).

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