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В кластер входят документы, описывающие программные и конфигурационные методы поддержания скорости работы и долговечности SSD-накопителей.
Общие признаки: износ флеш-памяти, команда TRIM, овер-провижининг, скорость записи SSD
Группа выше: Износ, надёжность и продление жизни SSD
Смысл: The main idea is that SSDs require a pool of empty blocks to maintain write performance; since RAID controllers often block the TRIM command, users should manually implement over-provisioning to prevent severe speed degradation.
SSD write performance drops as they fill up if TRIM is unsupported (common in RAID), but this can be fixed by manually leaving a percentage of the drive unallocated (over-provisioning).
Смысл: The main idea is that maintaining a reserve of unallocated space (over-provisioning) on an SSD is critical for maintaining high write speeds, reducing wear on the flash memory, and extending the overall lifespan of the drive.
Over-provisioning (creating a spare area) improves SSD performance and longevity by giving the controller more room for garbage collection and wear leveling.
Смысл: The main idea is that SSD performance is heavily dependent on the correct implementation of the TRIM command and proper system configuration. The author argues that most performance issues are not hardware failures but software or configuration errors that can be fixed by ensuring AHCI mode and avoiding dubious optimization software.
A technical guide explaining how the TRIM command prevents SSD slowdowns and how to verify and enable it across different operating systems and hardware configurations.