A DATA LAYOUT STRATEGY TO ENHANCE THE INTERNAL SSD PARALLELISM
Published In: 2ND INTERNATIONAL CONFERENCE ON ADVANCES IN APPLIED SCIENCE AND ENVIRONMENTAL ENGINEERING
Author(s): SORAYA ZERTAL
Abstract: Solid State Disks (SSDs) are promising data storage devices in term of performance and energy consumption comparing to Hard Drive Disks (HDDs). They are more and more used, even in data- intensive applications where hard constraints are put on throughtput and response time. Accessing data in parallel becomes capital to satisfy these performance requirements. The SSD internal structure provides a potential for parallel access at different levels, up to its dies and planes. However, this parallel access relies completely on the data layout. In this paper, a data placement algorithm is presented. It distributes data across the SSD components and maintains this layout after write operations. This makes the parallel requests execution possible at the lowest levels. The impact of this data layout on the reduction of the waiting time is evaluated and the obtained results show a significant gain for OLTP and scientific applications up to a factor of 10.
- Publication Date: 21-Dec-2014
- DOI: 10.15224/978-1-63248-033-0-13
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PERFORMANCE AND SOLIDITY SCHEMA FOR NAND FLASH MEMORY-BASED SOLID STATE DISK
Published In: 2ND INTERNATIONAL CONFERENCE ON ADVANCES IN APPLIED SCIENCE AND ENVIRONMENTAL ENGINEERING
Author(s): AHMED I N ALSALIBI , PUTRA SUMARI
Abstract: significant attention has been paid to the Flash Memory based Solid State Drive (SSD) which made replacing the existing HDD, used as a storage unit across the world, very possible. Different from traditional disks, SSD uses semiconductor chips to store data. This structure enjoys very original technical characteristics including Low power consumption, shock resistance and high performance in random access. Those features can overcome the shortcomings of magnetic disks. Moreover, SSD is a complex storage system with its own features. Flash memory, the basic unit of SSD, has many distinctive characteristics that lead to various challenges. Flash memory doesn't support a write operation feature. A write operation can only be performed on an empty or erased unit which makes it more time-consuming. Besides, flash memory has a limited number of erase cycles. Moreover, each storage unit has limited number of erase cycles. In this paper, we propose an efficient schema called Performance and So
- Publication Date: 21-Dec-2014
- DOI: 10.15224/978-1-63248-033-0-14
- Views: 0
- Downloads: 0