Strata: High-Performance Scalable Storage on Virtualized Non-volatile Memory
Brendan Cully, Jake Wires, Dutch Meyer, Kevin Jamieson, Keir Fraser, Tim Deegan, Daniel Stodden, Geoffrey Lefebvre, Daniel Ferstay, and Andrew Warfield, Coho Data
Strata is a commercial storage system designed around the high performance density of PCIe flash storage. We observe a parallel between the challenges introduced by this emerging flash hardware and the problems that were faced with underutilized server hardware about a decade ago. Borrowing ideas from hardware virtualization, we present a novel storage system design that partitions functionality into an address virtualization layer for high performance network-attached flash, and a hosted environment for implementing scalable protocol implementations. Our system targets the storage of virtual machine images for enterprise environments, and we demonstrate dynamic scale to over a million IO operations per second using NFSv3 in 13u of rack space, including switching.
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