Potential Difficulties During Investigations Due to Solid State Drive (SSD) Technology

2018 ◽  
pp. 75-91
Author(s):  
James Cox ◽  
Peter Bednar
Keyword(s):  
Solid State ◽  
Solid State Drive

Thermal Analysis of Ball Grid Array Non-Volatile Memory Express Solid-State Drive in Vacuum

2018 ◽  
Vol 39 (12) ◽  
pp. 1908-1911
Author(s):  
Eung Chang Lee ◽  
Jinsung Rho ◽  
Heeyoub Kang ◽  
Bong Jae Lee
Keyword(s):  
Thermal Analysis ◽  
Solid State ◽  
Ball Grid Array ◽  
Solid State Drive ◽  
Non Volatile Memory ◽  
Volatile Memory

scholarly journals Experimental Investigation of Frozen Solid State Drive on Digital Evidence with Static Forensic Methods

2018 ◽  
pp. 169
Author(s):  
Imam Riadi ◽  
Rusydi Umar ◽  
Imam Mahfudl Nasrulloh
Keyword(s):  
Solid State ◽  
Computer System ◽  
Rapid Development ◽  
Hard Disk ◽  
Data Access ◽  
Solid State Drive ◽  
Disk Storage ◽  
Digital Forensic ◽  
Storage Media ◽  
Media Storage

The rapid development of computer technology in hardware, is currently developing non-volatile computer storage media Solid State Drive (SSD). SSD technology has a faster data access speed than Hard Disk and is currently starting to replace Hard Disk storage media. Freezing software on computer systems is often carried out by computer technicians, because it can save a computer maintenance costs due to errors, be exposed to computer viruses or malware. This software is used to prevent unwanted changes to the computer system, when the computer is restarted changes that occur in the computer system will not be stored on storage media. When this happens, what should be done by digital forensic investigators. This study discusses experimental forensic investigations on SSD media storage with frozen conditions or in this study said the frozen SSD. Frozen SSD is the condition of the drive that is locked so that there is no change in the computer system. Software used to lock and prevent changes such as Deep Freeze, Shadow Defender, Windows Steady State, and Toolwiz Time Freeze. Forensic research stages using methods NIST. The result shows that from comparative analysis conducted with Deep Freeze the results of the RecoverMyFile gives 76.38% and Autopsy gives 75,27%, while frozen condition with Shadow Defender the results of the RecoverMyFile gives 59.72% and Autopsy gives 74.44%. So the results of this study indicate the drive freezing software has an effect obtained can be an obstacle in the digital forensic process.  

High-speed playback of spatiotemporal division multiplexing holographic 3D video stored in a solid-state drive using a digital micromirror device

2021 ◽  
Vol 19 (9) ◽  
pp. 093301
Author(s):  
Kohei Suzuki ◽  
Minori Tao ◽  
Yuki Maeda ◽  
Hirotaka Nakayama ◽  
Ren Noguchi ◽  
...  
Keyword(s):  
Solid State ◽  
High Speed ◽  
3D Video ◽  
Digital Micromirror Device ◽  
Solid State Drive

scholarly journals ZDC: A Zone Data Compression Method for Solid State Drive Based Flash Memory

Symmetry ◽  
2020 ◽  
Vol 12 (4) ◽  
pp. 623
Author(s):  
Xin Ye ◽  
Zhengjun Zhai ◽  
Xiaochang Li
Keyword(s):  
Solid State ◽  
Data Compression ◽  
Data Storage ◽  
Flash Memory ◽  
Research Result ◽  
Nand Flash ◽  
Data Deduplication ◽  
Solid State Drive ◽  
Research Results ◽  
Hot Zone

Solid-state drive (SSD) with flash memory as the storage medium are being widely used in various data storage systems. SSD data compression means that data is compressed before it is written to Not-And (NAND) Flash. Data compression can reduce the amount of data written in NAND Flash and improve the performance and reliability of SSDs. At present, the main problem facing data compression of SSD is how to improve the efficiency of data compression and decompression. In order to improve the performance of data compression and decompression, this study proposes a method of SSD data deduplication based on zone division. First, this study divides the storage space of the SSD into zones and divides them into one hot zone and multiple cold zones according to the different erasing frequency. Second, the data in each zone is divided into hot data and cold data according to the number of erasures. At the same time, the address mapping table in the hot zone is loaded into the cache. Finally, when there is a write or read request, the SSD will selectively compress or decompress the data according to the type of different zones. Through simulation tests, the correctness and effectiveness of this study are verified. The research results show that the data compression rate of this research result can reach 70–95%. Compared with SSD without data compression, write amplification is reduced by 5 to 30%, and write latency is reduced by 5 to 25%. The research results have certain reference value for improving the performance and reliability of SSD.

scholarly journals HMB-I/O: Fast Track for Handling Urgent I/Os in Nonvolatile Memory Express Solid-State Drives

2020 ◽  
Vol 10 (12) ◽  
pp. 4341
Author(s):  
Kyusik Kim ◽  
Seongmin Kim ◽  
Taeseok Kim
Keyword(s):  
Quality Of Service ◽  
Solid State ◽  
User Satisfaction ◽  
Nonvolatile Memory ◽  
Fast Track ◽  
Solid State Drives ◽  
Solid State Drive ◽  
Memory Buffer

Differentiated I/O services for applications with their own requirements are very important for user satisfaction. Nonvolatile memory express (NVMe) solid-state drive (SSD) architecture can improve the I/O bandwidth with its numerous submission queues, but the quality of service (QoS) of each I/O request is never guaranteed. In particular, if many I/O requests are pending in the submission queues due to a bursty I/O workload, urgent I/O requests can be delayed, and consequently, the QoS requirements of applications that need fast service cannot be met. This paper presents a scheme that handles urgent I/O requests without delay even if there are many pending I/O requests. Since the pending I/O requests in the submission queues cannot be controlled by the host, the host memory buffer (HMB), which is part of the DRAM of the host that can be accessed from the controller, is used to process urgent I/O requests. Instead of sending urgent I/O requests into the SSDs through legacy I/O paths, the latency is removed by directly inserting them into the HMB. Emulator experiments demonstrated that the proposed scheme could reduce the average and tail latencies by up to 99% and 86%, respectively.

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