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To increase the capacity of hard disk drive (HDD) with no significant cost, Seagate announced the world's first Shingled Write Disk (SWD) that employs Shingled Magnetic Recording (SMR) technology in 2014. The main drawback of SMR is that non-sequential write access to the disk is restricted due to overlap in the layout of data tracks. Seagate SWD mitigates these access restrictions by using an internal...
Garbage collection as a key technology for solid-state storage (SSD), it's has critical influence for the SSD's performance. This article addressed the low efficiency, high cost problem of the presented Garbage Collection (GC) Algorithm, Proposed a new Efficient NAND Flash GC Algorithm Based on Area and Block (GCbAB) Operation. The algorithm is not only efficient, low cost, but took into account the...
As digital resources increasingly growing and the economic benefit of digital intellectual property rights being increasingly important, people has been increasingly emphasis on information security issues brought by the data remnants in storage devices. They try their best to prevent the potential risks. In this paper, we survey comprehensively related technologies, standards and trends of erasure,...
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