@inproceedings{e819bc58009340feb9cd6c7e09b90a1d,
title = "Wear leveling in SSDs considered harmful",
abstract = "We argue that wear leveling in SSDs does more harm than good under modern settings where the endurance limit is in the hundreds. To support this claim, we evaluate existing wear leveling techniques and show that they exhibit anomalous behaviors and produce a high write amplification. These findings are consistent with a recent large-scale field study on the operational characteristics of SSDs. We discuss the option of forgoing wear leveling and instead adopting capacity variance in SSDs, and show that the capacity variance extends the lifetime of the SSD by up to 2.94×.",
keywords = "capacity variance, endurance, lifetime, SSD, wear leveling, write amplification",
author = "Ziyang Jiao and Janki Bhimani and Kim, {Bryan S.}",
note = "Funding Information: We thank the anonymous reviewers for their insightful comments and suggestions that help us to improve the quality of this paper. Peter Desnoyers provided the original version of FTLSim used in this work. This research was supported, in part, by the National Science Foundation awards CNS-2008324 and CNS-2008453. Publisher Copyright: {\textcopyright} 2022 ACM.; 14th ACM Workshop on Hot Topics in Storage and File Systems, HotStorage 2022 ; Conference date: 27-06-2022 Through 28-06-2022",
year = "2022",
month = jun,
day = "27",
doi = "10.1145/3538643.3539750",
language = "English (US)",
series = "HotStorage 2022 - Proceedings of the 2022 14th ACM Workshop on Hot Topics in Storage and File Systems",
publisher = "Association for Computing Machinery, Inc",
pages = "72--78",
booktitle = "HotStorage 2022 - Proceedings of the 2022 14th ACM Workshop on Hot Topics in Storage and File Systems",
}