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Added note about TRIM on Optane
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= Optane / 3D XPoint SSDs = | = Optane / 3D XPoint SSDs = | ||
These are SSDs with far better latencies and write endurance than NAND flash SSDs. They are byte addressable, such that ashift=9 is fine for use on them. Unlike NAND flash SSDs, they do not require any special power failure protection circuitry for reliability. However, they cost more per GB than NAND flash (as of 2020). The enterprise models make excellent SLOG devices. Here is a list of models that are known to perform well: | These are SSDs with far better latencies and write endurance than NAND flash SSDs. They are byte addressable, such that ashift=9 is fine for use on them. Unlike NAND flash SSDs, they do not require any special power failure protection circuitry for reliability. There is also no need to run TRIM on them. However, they cost more per GB than NAND flash (as of 2020). The enterprise models make excellent SLOG devices. Here is a list of models that are known to perform well: | ||
* Intel DC P4800X[https://www.servethehome.com/intel-optane-hands-on-real-world-benchmark-and-test-results/] | * Intel DC P4800X[https://www.servethehome.com/intel-optane-hands-on-real-world-benchmark-and-test-results/] | ||