A Re-configurable FTL (Flash Translation Layer) Architecture for NAND Flash based Applications

Park, Chanik; Cheon, Wonmoon; Lee, Yangsup; Jung, Myoungsoo; Cho, Wonhee; Yoon, HanBin

doi:10.1109/rsp.2007.8

Cited by 27 publications

(12 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…There are several kinds of log buffer-based FTL schemes such as BAST [1], FAST [2] and SAST [3]. The SAST scheme groups N number of sequential data blocks into a data block group (DBG).…”

Section: Related Workmentioning

confidence: 99%

“…We can find the optimal values by exhaustive simulation for target I/O workloads. A more efficient approach is to use the workload analysis technique proposed in [3]. To find the proper value for N , the workload analysis technique examines the request density of a logical block, which is the ratio of the number of requests accessed in the logical block to the total number of requests.…”

Section: Related Workmentioning

confidence: 99%

See 1 more Smart Citation

Workload-driven adaptive log buffer-based FTL

Shin¹

2010

IEICE Electron. Express

View full text Add to dashboard Cite

Flash translation layer (FTL) is generally used for NAND flash memory in order to handle the mapping between logical page address and physical page address. Log buffer-based FTLs provide good performances with small-sized mapping information. In designing the log buffer-based FTL, one important factor is to determine the mapping architecture between data block and log block, called associativity. While previous static schemes use fixed associativities, our scheme adjusts the associativity dynamically based on the run-time workload variation improving the performance by 5∼16% compared to the static scheme.

show abstract

“…There are several kinds of log buffer-based FTL schemes such as BAST [1], FAST [2] and SAST [3]. The SAST scheme groups N number of sequential data blocks into a data block group (DBG).…”

Section: Related Workmentioning

confidence: 99%

Section: Related Workmentioning

confidence: 99%

Workload-driven adaptive log buffer-based FTL

Shin¹

2010

IEICE Electron. Express

View full text Add to dashboard Cite

show abstract

“…There are three types of mapping schemes: block-level mapping, page-level mapping and hybrid mapping. Among these schemes, hybrid mapping employs the logging technique to temporarily hold updates to user data in the flash memory, which contributes to good write performance and small mapping [2], SAST (Set-Associative Sector Translation) [3], Superblock FTL [4] and MC_SPLIT [5]. Flash memory uses a wear-leveling scheme to increase its life time by making blocks in flash memory become aged in a balanced way as much as possible [6].…”

Section: Ftl (Flash Translation Layer)mentioning

confidence: 99%

An efficient management scheme for updating redundant information in flash-based storage system

Lee

Jung

Choi

et al. 2010

Des Autom Embed Syst

Self Cite

View full text Add to dashboard Cite

Since flash memory has many attractive characteristics such as high performance, non-volatility, low power consumption and shock resistance, it has been widely used as a storage media in embedded and computer system environments. However, there are many shortcomings in flash memory such as potentially high I/O latency due to erase-before-write and poor durability due to limited erase cycles. To address these performance and reliability anomalies, many large-scale storage systems use redundancy-based parallel access schemes such as RAID techniques. However, such redundancy-based schemes incur high overhead due to generating and storing redundancy information, especially in flash-based storage systems. In this paper, we propose a novel and performance-effective approach using a redundancy-based data management scheme in flash storage, called Flash-aware Redundancy Array. The proposed technique not only reduces the redundancy management overhead by performing redundancy update operations during idle periods, but also provides a preventive mechanism to recover data from unexpected read errors occurring before such redundancy update operations finish. From the experiments, we found that the proposed technique improves flash-based storage systems by 19% in average execution time as compared to other redundancy-based approaches.

show abstract

“…Any further writes to A, B or F would result in garbage collection, as shown in Figure 2. Some NFTL-like flash translation layers [8,9,10,11] are also proposed such as BAST [9], FAST [9], N+K mapping scheme [10], and AFTL [11]. They all adopt the block-level address translation so that they have the same system initialization time with NFTL.…”

Section: Related Workmentioning

confidence: 99%

A time-predictable system initialization design for huge-capacity flash-memory storage systems

2008

Proceedings of the 6th IEEE/ACM/IFIP International Conference on Hardware/Software Codesign and System Synthesis

View full text Add to dashboard Cite

The capacity of flash-memory storage systems grows at a speed similar to many other storage systems. In order to properly manage the product cost, vendors face serious challenges in system designs. How to provide an expected system initialization time for huge-capacity flash-memory storage systems has become an important research topic. In this paper, a time-predictable system initialization design is proposed for huge-capacity flash-memory storage systems. The objective of the design is to provide an expected system initialization time based on a coarse-grained flash translation layer. The time-predictable analysis of the design is provided to discuss the relation between the size of main memory and the system initialization time. The system initialization time can be also estimated and predicted by the time-predictable analysis.

show abstract

A Re-configurable FTL (Flash Translation Layer) Architecture for NAND Flash based Applications

Cited by 27 publications

References 3 publications

Workload-driven adaptive log buffer-based FTL

Workload-driven adaptive log buffer-based FTL

An efficient management scheme for updating redundant information in flash-based storage system

A time-predictable system initialization design for huge-capacity flash-memory storage systems

Contact Info

Product

Resources

About