The design and implementation of a log-structured file system
SOSP '91 Proceedings of the thirteenth ACM symposium on Operating systems principles
High-performance scientific data management system
Journal of Parallel and Distributed Computing
An efficient management scheme for large-scale flash-memory storage systems
Proceedings of the 2004 ACM symposium on Applied computing
ELF: an efficient log-structured flash file system for micro sensor nodes
SenSys '04 Proceedings of the 2nd international conference on Embedded networked sensor systems
Algorithms and data structures for flash memories
ACM Computing Surveys (CSUR)
Efficient identification of hot data for flash memory storage systems
ACM Transactions on Storage (TOS)
The Conquest file system: Better performance through a disk/persistent-RAM hybrid design
ACM Transactions on Storage (TOS)
A transactional flash file system for microcontrollers
ATEC '05 Proceedings of the annual conference on USENIX Annual Technical Conference
A Re-configurable FTL (Flash Translation Layer) Architecture for NAND Flash based Applications
RSP '07 Proceedings of the 18th IEEE/IFIP International Workshop on Rapid System Prototyping
Scalability in the XFS file system
ATEC '96 Proceedings of the 1996 annual conference on USENIX Annual Technical Conference
hFS: a hybrid file system prototype for improving small file and metadata performance
Proceedings of the 2nd ACM SIGOPS/EuroSys European Conference on Computer Systems 2007
Exploiting non-volatile RAM to enhance flash file system performance
EMSOFT '07 Proceedings of the 7th ACM & IEEE international conference on Embedded software
BPLRU: a buffer management scheme for improving random writes in flash storage
FAST'08 Proceedings of the 6th USENIX Conference on File and Storage Technologies
Development Platforms for Flash Memory Solid State Disks
ISORC '08 Proceedings of the 2008 11th IEEE Symposium on Object Oriented Real-Time Distributed Computing
A Hybrid Flash File System Based on NOR and NAND Flash Memories for Embedded Devices
IEEE Transactions on Computers
Design tradeoffs for SSD performance
ATC'08 USENIX 2008 Annual Technical Conference on Annual Technical Conference
ACM Transactions on Design Automation of Electronic Systems (TODAES)
FRASH: Exploiting storage class memory in hybrid file system for hierarchical storage
ACM Transactions on Storage (TOS)
Extending SSD lifetimes with disk-based write caches
FAST'10 Proceedings of the 8th USENIX conference on File and storage technologies
FlexFS: a flexible flash file system for MLC NAND flash memory
USENIX'09 Proceedings of the 2009 conference on USENIX Annual technical conference
Block management in solid-state devices
USENIX'09 Proceedings of the 2009 conference on USENIX Annual technical conference
FlashVM: virtual memory management on flash
USENIXATC'10 Proceedings of the 2010 USENIX conference on USENIX annual technical conference
A space-efficient flash translation layer for CompactFlash systems
IEEE Transactions on Consumer Electronics
Exploring the future of out-of-core computing with compute-local non-volatile memory
SC '13 Proceedings of the International Conference on High Performance Computing, Networking, Storage and Analysis
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As the performance potentials of SSD (Solid State Device) have been recognized, adopting SSD to IT products as HDD replacements is rapidly increasing. Since SSD is organized into multiple flash memory packages, it deploys peculiar device characteristics that do not occur in HDD, such as block-unit erasure overhead. Also, its high cost per capacity is the main obstacle to building a large-scale storage subsystem with only SSDs. An alternative is to build a hybrid storage subsystem where a small portion of SSDs are integrated with HDDs so as to utilize SSD's performance advantages in a cost-effective way. This study introduces a new form of file system, called N-hybrid (New-Form of hybrid file system), that enables us to support the hybrid device structure combined with both HDD and SSD. Our primary objectives in developing N-hybrid are to provide better I/O bandwidth by exploiting the characteristics of HDD and SSD and to provide a flexible data layout maximizing the usage of tight SSD storage resources. Several experiments were conducted to verify the effectiveness and suitability of N-hybrid.