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Adding aggressive error correction to a high-performance compressing flash file system

Yangwook Kang, Ethan L. Miller
2009 Proceedings of the seventh ACM international conference on Embedded software - EMSOFT '09  
We have developed a flash memory file system, RCFFS, that increases reliability by utilizing algebraic signatures to validate data and Reed-Solomon codes to correct erroneous or missing data.  ...  memory errors that would cause data loss for existing flash file systems.  ...  ACKNOWLEDGMENTS We would like to thank Kevin Greenan and other colleagues in the Storage Systems Research Center for their input and guidance.  ... 
doi:10.1145/1629335.1629376 dblp:conf/emsoft/KangM09 fatcat:fjbijqw6nzhfhjybojvreriufi

Exploring Data-Level Error Tolerance in High-Performance Solid-State Drives

Xin Xu, H. Howie Huang
2015 IEEE Transactions on Reliability  
To address this issue, flash devices employ different error-correction codes (ECC) to detect and correct soft errors.  ...  Specifically, we explore data-level error tolerance in various data-centric applications, and study the system implications for designing a low-cost yet high performance flash storage system, SoftFlash  ...  Thus, one can potentially relax the correctness requirements of non-critical data for high-performance flash storage systems.  ... 
doi:10.1109/tr.2014.2354931 fatcat:6r3xyventbcqrgqs4chuz3rthi

Content-assisted file decoding for nonvolatile memories

Yue Li, Yue Wang, Anxiao Jiang, Jehoshua Bruck
2012 2012 Conference Record of the Forty Sixth Asilomar Conference on Signals, Systems and Computers (ASILOMAR)  
The decoder can be adapted to work together with traditional ECC decoders to keep the number of errors within the correction capability of traditional decoders.  ...  We propose a new method for error correction, which uses the random access capability of NVMs and the redundancy that inherently exists in information content.  ...  INTRODUCTION Nonvolatile memories (NVMs), such as flash memories, have excellent speed and storage capacity. They have emerged as a crucial technology for storage systems.  ... 
doi:10.1109/acssc.2012.6489154 dblp:conf/acssc/LiWJB12 fatcat:jfufmpjb2vbdtdq6rpahaxt2a4

Scalable I/O tracing and analysis

Karthik Vijayakumar, Frank Mueller, Xiaosong Ma, Philip C. Roth
2009 Proceedings of the 4th Annual Workshop on Petascale Data Storage - PDSW '09  
However, these tools either produce extremely large trace files that complicate performance analysis, or sacrifice accuracy to collect high-level statistical information.  ...  ScalaIOTrace features aggressive trace compression that generates trace files of near constant size for regular I/O patterns and orders of magnitudes smaller for less regular ones.  ...  It was also supported by a joint faculty appointment between Oak Ridge National Laboratory and NC State University.  ... 
doi:10.1145/1713072.1713080 fatcat:bfzn3uzq4fbf3pjojedrzdsgbq

Design, Validation and Correlation of Characterized SODIMM Modules Supporting DDR3 Memory Interface

Vemula Harini
2013 IOSR Journal of Electronics and Communication Engineering  
DDR3-SODIMM module is a key component in the memory interface and is becoming increasingly important in enabling higher speeds.  ...  Characterized SODIMM module need to be designed to understand and analyze the impact of SODIMM parameters at higher speeds and thereby define more robust memory interface.  ...  Our approach: In this work, aiming at achieving a stronger error-correcting capability with much reduced complexity, we propose a high rate error-control system using The Product Reed Solomon code consists  ... 
doi:10.9790/2834-0650111 fatcat:5forrex6lbdxhc7rnkzevdrawy

MyRocks: LSM-Tree Database Storage Engine Serving Facebook's Social Graph

Yoshinori Matsunobu, Siying Dong, Herman Lee
2020 Proceedings of the VLDB Endowment  
To overcome these limitations, MyRocks, a new MySQL storage engine, was built on top of RocksDB by adding relational capabilities.  ...  MyRocks also reduced the instance size by 62.3% for UDB data sets and performed fewer I/O operations than InnoDB.  ...  In order to keep the space usage down, we needed to defragment constantly and aggressively, which in turn, reduced server performance and wore out the flash faster.  ... 
dblp:journals/pvldb/MatsunobuDL20 fatcat:wnkowlvgundwtgy4q6iikwi3yy

Rewritable Two-Dimensional DNA-Based Data Storage with Machine Learning Reconstruction [article]

Chao Pan, S. Kasra Tabatabaei, SM Hossein Tabatabaei Yazdi, Alvaro G. Hernandez, Charles M. Schroeder, Olgica Milenkovic
2021 bioRxiv   pre-print
Moreover, the storage density of the molecules can be increased by using different encoding dimensions and avoiding error-correction redundancy.  ...  Here, we report on a two-dimensional molecular data storage system that records information in both the sequence and the backbone structure of DNA.  ...  In the sequence dimension, we perform aggressive quantization and specialized lossless compression that leads to two-fold file size reduction.  ... 
doi:10.1101/2021.02.22.432304 fatcat:6cl3gyvqvnaqfe2xth5lgb2e5m

Evolution of Development Priorities in Key-value Stores Serving Large-scale Applications: The RocksDB Experience

Siying Dong, Andrew Kryczka, Yanqin Jin, Michael Stumm
2021 USENIX Conference on File and Storage Technologies  
Lessons from failure handling taught us that data corruption errors needed to be detected earlier and at every layer of the system.  ...  RocksDB is a key-value store targeting large-scale distributed systems and optimized for Solid State Drives (SSDs).  ...  writes, and handle errors returned from the file system in a correct manner.  ... 
dblp:conf/fast/DongKJS21 fatcat:n4ylph3m5re4rihsiv4p5mw7yy

Digital Camera Image Formation: Processing and Storage [chapter]

Aaron Deever, Mrityunjay Kumar, Bruce Pillman
2012 Digital Image Forensics  
This chapter presents a high-level overview of image formation in a digital camera, highlighting aspects of potential interest in forensic applications.  ...  The discussion here focuses on image processing, especially processing steps related to concealing artifacts caused by camera hardware or that tend to create artifacts themselves.  ...  Ken Parulski also provided a great deal of assistance for the discussion of file formats.  ... 
doi:10.1007/978-1-4614-0757-7_2 fatcat:4hqe5bbxfbdjplo7vpmalngfl4

Analysis of HDFS under HBase: a facebook messages case study

Tyler Harter, Dhruba Borthakur, Siying Dong, Amitanand S. Aiyer, Liyin Tang, Andrea C. Arpaci-Dusseau, Remzi H. Arpaci-Dusseau
2014 USENIX Conference on File and Storage Technologies  
We find hot data is too large to easily fit in RAM and cold data is too large to easily fit in flash; however, cost simulations show that adding a small flash tier improves performance more than equivalent  ...  Messages represents a new HDFS workload: whereas HDFS was built to store very large files and receive mostlysequential I/O, 90% of files are smaller than 15MB and I/O is highly random.  ...  Adding flash to a system can, if used properly, only improve performance, so the interesting question is, given that we want to buy performance with money, should we buy flash, or something else?  ... 
dblp:conf/fast/HarterBDATAA14 fatcat:p3cuzg3inrcv3gz3wfo5s6mcni

The Mars Rover Spirit FLASH anomaly

G. Reeves, T. Neilson
2005 2005 IEEE Aerospace Conference  
With the eyes of the world upon us, the anomaly team used each scrap of information, our knowledge of the system, and sheer determination to analyze and fix the problem, then return the vehicle to normal  ...  The Mars Exploration Rover "Spirit" suffered a debilitating anomaly that prevented communication with Earth for several anxious days.  ...  Instead, again due to a configuration error, the task performing the file system activity was silently suspended.  ... 
doi:10.1109/aero.2005.1559723 fatcat:7vtmn65tgzctfpgogzjjgtonzi

Flikker

Song Liu, Karthik Pattabiraman, Thomas Moscibroda, Benjamin G. Zorn
2011 SIGPLAN notices  
Energy has become a first-class design constraint in computer systems. Memory is a significant contributor to total system power.  ...  We also find that Flikker can save between 20-25% of the power consumed by the memory sub-system in a mobile device, with negligible impact on application performance.  ...  In work submitted concurrently with our own, Salajegheh et al. propose "Half-wits" to save Flash power consumption by operating Flash chips at a lower voltage level and correcting errors with software  ... 
doi:10.1145/1961296.1950391 fatcat:6fn5mc3tavaolinrvy6vgefvqq

Flikker

Song Liu, Karthik Pattabiraman, Thomas Moscibroda, Benjamin G. Zorn
2011 SIGARCH Computer Architecture News  
Energy has become a first-class design constraint in computer systems. Memory is a significant contributor to total system power.  ...  We also find that Flikker can save between 20-25% of the power consumed by the memory sub-system in a mobile device, with negligible impact on application performance.  ...  In work submitted concurrently with our own, Salajegheh et al. propose "Half-wits" to save Flash power consumption by operating Flash chips at a lower voltage level and correcting errors with software  ... 
doi:10.1145/1961295.1950391 fatcat:gowrgwz22fe5dfqhk5r2uyn3xe

Flikker

Song Liu, Karthik Pattabiraman, Thomas Moscibroda, Benjamin G. Zorn
2011 Proceedings of the sixteenth international conference on Architectural support for programming languages and operating systems - ASPLOS '11  
Energy has become a first-class design constraint in computer systems. Memory is a significant contributor to total system power.  ...  We also find that Flikker can save between 20-25% of the power consumed by the memory sub-system in a mobile device, with negligible impact on application performance.  ...  In work submitted concurrently with our own, Salajegheh et al. propose "Half-wits" to save Flash power consumption by operating Flash chips at a lower voltage level and correcting errors with software  ... 
doi:10.1145/1950365.1950391 dblp:conf/asplos/LiuPMZ11 fatcat:apdpgfud2fcjbjeuguwez33mfq

Flikker

Song Liu, Karthik Pattabiraman, Thomas Moscibroda, Benjamin G. Zorn
2012 SIGPLAN notices  
Energy has become a first-class design constraint in computer systems. Memory is a significant contributor to total system power.  ...  We also find that Flikker can save between 20-25% of the power consumed by the memory sub-system in a mobile device, with negligible impact on application performance.  ...  In work submitted concurrently with our own, Salajegheh et al. propose "Half-wits" to save Flash power consumption by operating Flash chips at a lower voltage level and correcting errors with software  ... 
doi:10.1145/2248487.1950391 fatcat:acwfyax67re4dn3j36dvqamerm
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