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goldworldnet

To: goldworldnet who wrote (95025)	12/5/2016 9:32:55 AM
From: FJB	1 Recommendation Read Replies (1) of 110582

I bought two 960GB SanDisk SSDs in the last year. They start out at 960GB, so that is an issue right there. SSDs also overprovision space. kingston.com To avoid a scenario where the SSD is filled to full capacity with invalid pages, over-provisioning is used by the FSP garbage collection function as a temporary workspace to manage scheduled valid page merges and reclaim blocks filled with invalid pages. Any reclaimed pages/blocks are then added to the over-provisioned capacity to accommodate write operations from the FSP and maximize performance during peak traffic load as the performance impact of reading, erasing, modifying and writing all valid pages back into an already partially full block filled with invalid pages can be a slow exercise. The garbage collection operates independently of the operating system and is automatically triggered during periods of low activity, periodically or by issuing the respective ATA Data Set Management TRIM command.

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