Conquest: Better Performance Through a Disk/Persistent-RAM Hybrid File System
ATEC '02 Proceedings of the General Track of the annual conference on USENIX Annual Technical Conference
HeRMES: High-Performance Reliable MRAM-Enabled Storage
HOTOS '01 Proceedings of the Eighth Workshop on Hot Topics in Operating Systems
A superblock-based flash translation layer for NAND flash memory
EMSOFT '06 Proceedings of the 6th ACM & IEEE International conference on Embedded software
An adaptive two-level management for the flash translation layer in embedded systems
Proceedings of the 2006 IEEE/ACM international conference on Computer-aided design
A design for high-performance flash disks
ACM SIGOPS Operating Systems Review - Systems work at Microsoft Research
A comparison of file system workloads
ATEC '00 Proceedings of the annual conference on USENIX Annual Technical Conference
A log buffer-based flash translation layer using fully-associative sector translation
ACM Transactions on Embedded Computing Systems (TECS)
A space-efficient flash translation layer for CompactFlash systems
IEEE Transactions on Consumer Electronics
Energy- and endurance-aware design of phase change memory caches
Proceedings of the Conference on Design, Automation and Test in Europe
Leveraging value locality in optimizing NAND flash-based SSDs
FAST'11 Proceedings of the 9th USENIX conference on File and stroage technologies
A hybrid SSD with PRAM and NAND Flash memory
Microprocessors & Microsystems
An efficient method for record management in flash memory environment
Journal of Systems Architecture: the EUROMICRO Journal
VM aware journaling: improving journaling file system performance in virtualization environments
Software—Practice & Experience
Microprocessors & Microsystems
Phase-change memory: An architectural perspective
ACM Computing Surveys (CSUR)
Low cost power failure protection for MLC NAND flash storage systems with PRAM/DRAM hybrid buffer
Proceedings of the Conference on Design, Automation and Test in Europe
DATE '12 Proceedings of the Conference on Design, Automation and Test in Europe
Phase change memory in enterprise storage systems: silver bullet or snake oil?
Proceedings of the 1st Workshop on Interactions of NVM/FLASH with Operating Systems and Workloads
Towards greener data centers with storage class memory
Future Generation Computer Systems
FAST'14 Proceedings of the 12th USENIX conference on File and Storage Technologies
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NAND flash-based storage is widely used in embedded systems due to its numerous benefits: low cost, high density, small form factor and so on. However, NAND flash-based storage is still suffering from serious performance degradation for random or small size write access. This degradation mainly comes from the physical constraints of NAND flash: erase-before-program and different unit size of erase and program operations. To overcome these constraints, we propose to use PRAM (Phase-change RAM) which supports advanced features: fast byte access capability and no requirement for erase-before-program. In this paper, we focus on developing a high-performance NAND flash-based storage system by maximally exploiting the advanced feature of PRAM, in terms of performance and wearing out. To do this, we first propose a new hybrid storage architecture which consists of PRAM and NAND flash. Second, we devise two novel software schemes for the proposed hybrid storage architecture; FSMS (File System Metadata Separation) and hFTL (hybrid Flash Translation Layer). Finally, we demonstrate that our hybrid architecture increases the performance up to 290% and doubles the lifespan compared to the existing NAND flash only storage systems.