Mapping Structures for Flash Memories: Techniques and Open Problems

12 years 11 months ago
Mapping Structures for Flash Memories: Techniques and Open Problems
Flash memory is a type of electrically erasable programmable read-only memory (EEPROM). Because flash memories are nonvolatile and relatively dense, they are now used to store files and other persistent objects in handheld computers, mobile phones, digital cameras, portable music players, and many other computer systems in which magnetic disks are inappropriate. Flash, like earlier EEPROM devices, suffers from two limitations. First, bits can only be cleared by erasing a large block of memory. Second, each block can only sustain a limited number of erasures, after which it can no longer reliably store data. Due to these limitations, sophisticated data structures and algorithms are required to effectively use flash memories. These algorithms and data structures support efficient not-in-place updates of data, reduce the number of erasures, and level the wear of the blocks in the device. This survey presents these algorithms and data structures as well as open theoretical problems th...
Eran Gal, Sivan Toledo
Added 25 Jun 2010
Updated 25 Jun 2010
Type Conference
Year 2005
Authors Eran Gal, Sivan Toledo
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