About a year ago, I wrote about the ever-decreasing role of spinning disks in highly transactional OLTP storage workloads. Back then, Texas Memory Systems had just released test results for its RamSan-630 SSD storage product that achieved more than 400,000 SPC-1 I/Os per second (IOPS) at a cost of $1.05 per I/O -- a truly remarkable performance result that was (and is) impossible to achieve with traditional disks at the same price.
Today, the Storage Performance Council (SPC) published new test results for Kaminario's K2 SSD storage product. Its record-shattering performance is in excess of 1.2 million SPC-1 IOPS for just 40 cents per I/O. That Kaminario can produce these results at such an economy is a huge testament to the advances made in SSD technology and further proof that solid state rules the roost when it comes to OLTP workloads.
[ Also on InfoWorld: See how far solid-state disks have come since Matt Prigge proclaimed them the reigning champs for storage. | Sign up for InfoWorld's Data Explosion newsletter for news and updates on how to deal with growing volumes of data in the enterprise. ]
However, that's not all it tells us. Although the full details aren't yet available, it appears that Kaminario was able to more than triple Texas Memory Systems' performance not by using an entirely new type of SSD but by using a different architecture with current SSDs. Unlike Texas Memory's single-appliance approach or the scale-up architecture used by many traditional storage vendors, new entrants to the storage space such as Kaminario tend to develop scale-out architectures. That key difference is likely why Kaminario now holds, at least temporarily, the transaction-performance crown.
Where scale-up falls short