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What does change Max P/E count to reduce failure rate mean in the bug 1411698

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Applies to

SSD

Answer

  • "P/E count" is not a proprietary concept of any specific storage manufacturer. It is a general concept for SSDs.
  • The P/E (Program/Erase) count is a crucial concept when it comes to understanding the lifespan and durability of SSDs (Solid State Drives).
  • In an SSD, data is stored in flash memory cells. When data is written to these cells, it's a "program" operation. When data is deleted, the cells must be "erased" before new data can be written. The combination of these two actions is called a Program/Erase cycle, or P/E cycle.
  • The P/E count or cycle is important because each cell in an SSD has a limited number of P/E cycles before it can no longer reliably store data. This number varies depending on the type of flash memory used in the SSD.
  • In the bug 1411698, the goal of reducing SSD failure rates was achieved by improving the method of counting the P/E cycles.

Additional Information

1411698 - TPM4* and PX05* drive firmware maintenance release
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