Just wanted to share with other samsung ssd evo owners, last year I had a problem with read performance with my 250GB evo samsung ssd, I did a secure errase which fixed my problem, but it returned a few months later.
Last month I found out it was due to a error in the software algorithm, the 840 EVO performed read-retry processes aggressively, resulting in a drop in overall read performance."
"A drop in performance occurs on data stored for a long period of time and [that] has been written only once. SSDs usually calibrate changes in the statuses of cells over time via the flash management software algorithm.
AnandTech | Samsung Releases Firmware Update to Fix the SSD 840 EVO Read Performance Bug
I downloaded new firmware and attached is a tool that fixes the data stored on ssd, this was released last October but I only found out about Jan this year, it worked my os was working after fine, make sure you got a backup image before running the fix..
Hopeit helps any samsung evo ssd owners
Joe
Last month I found out it was due to a error in the software algorithm, the 840 EVO performed read-retry processes aggressively, resulting in a drop in overall read performance."
"A drop in performance occurs on data stored for a long period of time and [that] has been written only once. SSDs usually calibrate changes in the statuses of cells over time via the flash management software algorithm.
AnandTech | Samsung Releases Firmware Update to Fix the SSD 840 EVO Read Performance Bug
I downloaded new firmware and attached is a tool that fixes the data stored on ssd, this was released last October but I only found out about Jan this year, it worked my os was working after fine, make sure you got a backup image before running the fix..
Hopeit helps any samsung evo ssd owners
Joe
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