> The names suggest that TRIM is for marking sectors for garbage collection while > SECURITY ERASE tries a bit harder. From the runtime performance point of view, I > would expect that S.E. is at least as fast as TRIM as no more garbage needs to > be collected at a later point. From a durability PoV, not so sure, it could be > that S.E. overwrites all blocks (or not). > > Anyway, I have not read into the details and unless the standards (and > manufacturers) can guarantee certain behavior, it will likely vary between > device models. On a decent SSD security erase is almost immediate and does not need to overwrite anything. Alan -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
