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SIGMETRICS '92/PERFORMANCE '92 Proceedings of the 1992 ACM SIGMETRICS joint international conference on Measurement and modeling of computer systems
eNVy: a non-volatile, main memory storage system
ASPLOS VI Proceedings of the sixth international conference on Architectural support for programming languages and operating systems
Using data clustering to improve cleaning performance for plash memory
Software—Practice & Experience
Cleaning policies in mobile computers using flash memory
Journal of Systems and Software
2Q: A Low Overhead High Performance Buffer Management Replacement Algorithm
VLDB '94 Proceedings of the 20th International Conference on Very Large Data Bases
An Adaptive Striping Architecture for Flash Memory Storage Systems of Embedded Systems
RTAS '02 Proceedings of the Eighth IEEE Real-Time and Embedded Technology and Applications Symposium (RTAS'02)
Efficient on-line identification of hot data for flash-memory management
Proceedings of the 2005 ACM symposium on Applied computing
A superblock-based flash translation layer for NAND flash memory
EMSOFT '06 Proceedings of the 6th ACM & IEEE International conference on Embedded software
A flash-memory based file system
TCON'95 Proceedings of the USENIX 1995 Technical Conference Proceedings
A log buffer-based flash translation layer using fully-associative sector translation
ACM Transactions on Embedded Computing Systems (TECS)
Hybrid solid-state disks: combining heterogeneous NAND flash in large SSDs
Proceedings of the 2008 Asia and South Pacific Design Automation Conference
LAST: locality-aware sector translation for NAND flash memory-based storage systems
ACM SIGOPS Operating Systems Review
Storage architecture and software support for SLC/MLC combined flash memory
Proceedings of the 2009 ACM symposium on Applied Computing
FlexFS: a flexible flash file system for MLC NAND flash memory
USENIX'09 Proceedings of the 2009 conference on USENIX Annual technical conference
A space-efficient flash translation layer for CompactFlash systems
IEEE Transactions on Consumer Electronics
MFTL: A Design and Implementation for MLC Flash Memory Storage Systems
ACM Transactions on Storage (TOS)
Software controlled cell bit-density to improve NAND flash lifetime
Proceedings of the 49th Annual Design Automation Conference
Phœnix: reviving MLC blocks as SLC to extend NAND flash devices lifetime
Proceedings of the Conference on Design, Automation and Test in Europe
Dual greedy: adaptive garbage collection for page-mapping solid-state disks
DATE '12 Proceedings of the Conference on Design, Automation and Test in Europe
Wear unleveling: improving NAND flash lifetime by balancing page endurance
FAST'14 Proceedings of the 12th USENIX conference on File and Storage Technologies
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Multi-level cell (MLC) flash memory has lower bit cost compared to single-level cell (SLC) flash memory. However, there are several obstacles to the wide use of MLC flash memory, including slow write performance and shorter lifespan. To improve the performance and lifespan of MLC flash memory, we propose an FTL (flash translation layer) for MLC flash memory, called ComboFTL. By exploiting the SLC mode of MLC flash memory, ComboFTL manages a small SLC region for hot data and a large MLC region for cold data. To provide the performance and lifespan similar to those of SLC flash memory, ComboFTL identifies the hotness/coldness of data effectively. It can also adjust its several policies based on workload changes. Our experimental results showed that ComboFTL improves the write performance and lifespan of MLC flash memory significantly.