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It is sometimes called semiconductor storage device, solid-state device, or solid-state disk. [1] [2] SSDs rely on non-volatile memory, typically NAND flash, to store data in memory cells. The performance and endurance of SSDs vary depending on the number of bits stored per cell, ranging from high-performing single-level cells (SLC) to more ...
Formerly, now a brand of WD: No Formerly, now a brand of WD: Seagate Technology [35] United States and Ireland Yes Yes, through stake in Kioxia: Yes No Yes, through its subsidiary SandForce and stake in Kioxia: Silicon Power [36] Taiwan No No Yes No No SK hynix [37] South Korea No Yes Yes No Yes (since 2012) [1] STEC [38] United States No No ...
This implies that the SSD controller must maintain a mapping table from host (logical) to NAND (physical) addresses. This mapping is usually called the L2P table. The layer that performs the translation from logical to physical addresses is called the flash translation layer or FTL. [6]
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The minimal chunk size (page) for a read operation is much smaller than the minimal chunk size (block) for a write/erase operation, resulting in an undesirable phenomenon called write amplification that limits the random write performance and write endurance of a flash-based storage device.
Image source: The Motley Fool. Western Digital (NASDAQ: WDC) Q1 2025 Earnings Call Oct 24, 2024, 4:30 p.m. ET. Contents: Prepared Remarks. Questions and Answers. Call Participants
The term solid-state became popular at the beginning of the semiconductor era in the 1960s to distinguish this new technology. A semiconductor device works by controlling an electric current consisting of electrons or holes moving within a solid crystalline piece of semiconducting material such as silicon, while the thermionic vacuum tubes it replaced worked by controlling a current of ...