Matthew Curtis-Maury, Ram Kesavan, Bharadwaj V R, Nikhil Mattankot, Vania Fang, Yash Trivedi, Kesari Mishra, and Qin Li, NetApp, Inc
Flash-based persistent storage media are capable of sub-millisecond latency I/O. However, a storage architecture optimized for spinning drives may contain software delays that make it impractical for use with such media. The NetApp® ONTAP® storage system was designed originally for spinning drives, and needed alterations before it was productized as an all-SSD system. In this paper, we focus on the changes made to the read I/O path over the last several years, which have been crucial to this transformation, and present them in chronological fashion together with the associated performance analysis.
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author = {Matthew Curtis-Maury and Ram Kesavan and Bharadwaj V R and Nikhil Mattankot and Vania Fang and Yash Trivedi and Kesari Mishra and Qin Li},
title = {{I/O} in a Flash: Evolution of {ONTAP} to {Low-Latency} {SSDs}},
booktitle = {22nd USENIX Conference on File and Storage Technologies (FAST 24)},
year = {2024},
isbn = {978-1-939133-38-0},
address = {Santa Clara, CA},
pages = {177--192},
url = {https://www.usenix.org/conference/fast24/presentation/curtis-maury},
publisher = {USENIX Association},
month = feb
}
