Shingled Magnetic Recording (SMR) technology increases the areal density of hard disk drives. Among the three types of SMR drives on the market today, Host Aware SMR (HA-SMR) drives look the most promising. In this paper, we carry out evaluation to understand the performance of HA-SMR drives with the objective of building large-scale storage systems using this type of drive. We focus on evaluating the special features of HA-SMR drives, such as the open zone issue and media cache cleaning efficiency. Based on our observations we propose a novel host-controlled indirection buffer to enhance the drive's I/O performance. Finally, we present a case study of the open zone issue to show the potential of this host-controlled indirection buffer for HA-SMR drives.
|Original language||English (US)|
|State||Published - 2016|
|Event||8th USENIX Workshop on Hot Topics in Storage and File Systems, HotStorage 2016, co-located with USENIX ATC 2016 - Denver, United States|
Duration: Jun 20 2016 → Jun 21 2016
|Conference||8th USENIX Workshop on Hot Topics in Storage and File Systems, HotStorage 2016, co-located with USENIX ATC 2016|
|Period||6/20/16 → 6/21/16|
Bibliographical noteFunding Information:
Acknowledgments This work is partially supported by the following NSF awards: 1439622, 1305237, 1421913, 1217569 and 1115471. We thank the anonymous reviewers, Timothy Feldman, Andrew Kowles, and our shepherd, Pallavi Joshi, for their feedback.