File Classification in Self-* Storage Systems
ICAC '04 Proceedings of the First International Conference on Autonomic Computing
Efficient identification of hot data for flash memory storage systems
ACM Transactions on Storage (TOS)
On efficient wear leveling for large-scale flash-memory storage systems
Proceedings of the 2007 ACM symposium on Applied computing
Endurance enhancement of flash-memory storage systems: an efficient static wear leveling design
Proceedings of the 44th annual Design Automation Conference
A nine year study of file system and storage benchmarking
ACM Transactions on Storage (TOS)
FlashSim: A Simulator for NAND Flash-Based Solid-State Drives
SIMUL '09 Proceedings of the 2009 First International Conference on Advances in System Simulation
A file-system-aware FTL design for flash-memory storage systems
Proceedings of the Conference on Design, Automation and Test in Europe
FSAF: file system aware flash translation layer for NAND flash memories
Proceedings of the Conference on Design, Automation and Test in Europe
A low-cost wear-leveling algorithm for block-mapping solid-state disks
Proceedings of the 2011 SIGPLAN/SIGBED conference on Languages, compilers and tools for embedded systems
Hot data identification for flash-based storage systems using multiple bloom filters
MSST '11 Proceedings of the 2011 IEEE 27th Symposium on Mass Storage Systems and Technologies
Meta-Cure: a reliability enhancement strategy for metadata in NAND flash memory storage systems
Proceedings of the 49th Annual Design Automation Conference
Observational wear leveling: an efficient algorithm for flash memory management
Proceedings of the 49th Annual Design Automation Conference
Joint management of RAM and flash memory with access pattern considerations
Proceedings of the 49th Annual Design Automation Conference
Extending the lifetime of NAND flash memory by salvaging bad blocks
DATE '12 Proceedings of the Conference on Design, Automation and Test in Europe
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The write endurance of NAND flash memory adversely impacts the lifetime of flash devices. A flash cell is likely to wear out after undergoing excessive program/erase (P/E) flips. Wear leveling is hence employed to spread erase operations as evenly as possible. It is traditionally conducted by the flash translation layer (FTL), a management firmware residing in flash devices. In this paper, we shall propose a novel wear leveling algorithm involving the operating system (OS). We will show that our operating System-Assisted Wear leveling (SAW) algorithm can significantly improve the wear evenness. SAW takes advantage of OS's knowledge about files at a higher level of abstraction, and provides useful hints to the lower-level FTL to accommodate data. A prototype based on a file system and an FTL has been developed to verify the effectiveness of SAW. Experiments show that wear evenness can be improved by as much as 85.0% compared to the state-of-the-art FTL wear leveling schemes.