Wear leveling in SSDs considered harmful
Rather silly title, but that&#x27;s true of many papers reusing this meme.<p>The abstract presents an alternative to wear leveling that they refer to as &quot;capacity variance&quot;, also known as <i>breaking compatibility with all previous filesystems, drivers, and bootloaders</i>. Wear leveling has been a necessary evil, because without it flash storage simply would not be usable <i>at all</i> as hard drive replacements&#x2F;successors. Nowadays <i>some</i> of the pieces are in place to allow software to interact with SSDs in a more natural fashion, but it still isn&#x27;t possible to completely forego the FTL that emulates hard drive behavior.