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Tvarak: Software-managed hardware offload for DAX NVM storage redundancy
[article]
2019
arXiv
pre-print
Tvarak efficiently implements system-level redundancy for direct-access (DAX) NVM storage. Production storage systems complement device-level ECC (which covers media errors) with system-checksums and cross-device parity. This system-level redundancy enables detection of and recovery from data corruption due to device firmware bugs (e.g., reading data from the wrong physical location). Direct access to NVM penalizes software-only implementations of system-level redundancy, forcing a choice
arXiv:1908.09922v1
fatcat:ydfy6gak3zhlhe2wpwiifyy4pe