While Intel has made headlines with its X25-E Serial ATA solid-state drives, Fusion-io has been tackling the enterprise solid-state storage concept in an altogether different way. In company tradition, the newly announced ioDrive Duo SSDs plug into PCI Express interfaces instead of Serial ATA—but they're considerably faster than Fusion-io's previous-gen products.
How much faster? Fusion-io quotes top sustained bandwidth of 1500MB/s for reads and 1400MB/s for writes, with a respective 185,000 and 167,000 IOPS. (That's with the 320GB model. Others have notably lower write performance, although they can still purportedly reach more than a gig per second.)
As far as we can tell, the firm achieves these speeds by sticking two physical SSD modules on a single PCIe card and using them together, likely in a RAID config. Fusion-io says you can set up the modules in a RAID 1 array for redundancy, although that probably induces a performance hit.
On the capacity front, Fusion-io will start offering 160GB, 320GB, and 640GB ioDrive Duo SSDs in April, and it plans to introduce a 1.28TB model in the second half of the year. The two lowest-capacity variants are based on single-level cell flash memory, so they should last longer and presumably cost more. Oh, and all models support PCI Express x8 or PCI express 2.0 x4 interfaces. You can peruse a detailed PDF spec sheet over here.
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