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- Write_amplification abstract "Write amplification (WA) is an undesirable phenomenon associated with flash memory and solid-state drives (SSDs) where the actual amount of physical information written is a multiple of the logical amount intended to be written. Because flash memory must be erased before it can be rewritten, the process to perform these operations results in moving (or rewriting) user data and metadata more than once. This multiplying effect increases the number of writes required over the life of the SSD which shortens the time it can reliably operate. The increased writes also consume bandwidth to the flash memory which mainly reduces random write performance to the SSD. Many factors will affect the write amplification of an SSD; some can be controlled by the user and some are a direct result of the data written to and usage of the SSD.Intel and SiliconSystems (acquired by Western Digital in 2009) used the term write amplification in their papers and publications as early as 2008. Write amplification is typically measured by the ratio of writes committed to the flash memory to the writes coming from the host system. Without compression, write amplification cannot drop below one. Using compression, SandForce has claimed to achieve a typical write amplification of 0.5, with best-case values as low as 0.14 in the SF-2281 controller.".
- Write_amplification thumbnail Write_Amplification_on_SSD.png?width=300.
- Write_amplification wikiPageID "27560356".
- Write_amplification wikiPageRevisionID "599151760".
- Write_amplification hasPhotoCollection Write_amplification.
- Write_amplification subject Category:Solid-state_computer_storage.
- Write_amplification comment "Write amplification (WA) is an undesirable phenomenon associated with flash memory and solid-state drives (SSDs) where the actual amount of physical information written is a multiple of the logical amount intended to be written. Because flash memory must be erased before it can be rewritten, the process to perform these operations results in moving (or rewriting) user data and metadata more than once.".
- Write_amplification label "Write amplification".
- Write_amplification label "ライトアンプリフィケーション".
- Write_amplification sameAs ライトアンプリフィケーション.
- Write_amplification sameAs m.0c3v907.
- Write_amplification sameAs Q4167496.
- Write_amplification sameAs Q4167496.
- Write_amplification wasDerivedFrom Write_amplification?oldid=599151760.
- Write_amplification depiction Write_Amplification_on_SSD.png.
- Write_amplification isPrimaryTopicOf Write_amplification.
