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Wednesday, April 20 • 3:00pm - 3:50pm
MD/RAID-456 Write Journal and Cache - Song Liu, Facebook

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Without NVRAM and proper software support, MD/RAID-456 has not been very competitive against hardware RAID in enterprise use cases. Particularly, MD/RAID-456 suffers from potential data loss during unexpected shut down (the write hole); and long write latency from read-modify-write updates (slow fsync). With recent development in NVRAM (NVMe SSD, NVDIMM), it is now possible to bring enterprise level reliability and performance to MD/RAID-456. In this presentation, Song Liu will present joint work with Shaohua Li in MD/RAID-456 write journal and write back cache.

avatar for Song Liu

Song Liu

Software Engineer, Facebook
Song Liu is a software engineer in Facebook, working on storage software and hardware design. His interest is in storage and distributed systems.

Wednesday April 20, 2016 3:00pm - 3:50pm PDT
State Ballroom B