<instructions>Your goal is to analyze the following comment and estimate how highly it will be upvoted by the Hacker News community.</instructions><comment><author>kasabali</author><text>You don&amp;#x27;t need to go through all that trouble to use most cheap DRAMless SSDs in pSLC mode. You can simply under-provision them by using only 25-33% capacity.&lt;p&gt;Most low end DRAMless controllers run in full disk caching mode. In other words, they first write *everything* in pSLC mode until all cells are written, only after there are no cells left they go back and rewrite&amp;#x2F;group some cells as TLC&amp;#x2F;QLC to free up some space. And they do it &lt;i&gt;only&lt;/i&gt; when necessary, they don&amp;#x27;t go and do that in background to free up more space.&lt;p&gt;So, if you simply create a partition 1&amp;#x2F;3 (for TLC) or 1&amp;#x2F;4 (for QLC) the size of the disk, make sure the remaining empty space is TRIMMED and never used, it&amp;#x27;ll be &lt;i&gt;always&lt;/i&gt; writing in pSLC mode.&lt;p&gt;You can verify the SSD you&amp;#x27;re interested in is running in this mode by searching for a &amp;quot;HD Tune&amp;quot; &lt;i&gt;full drive&lt;/i&gt; write benchmark results for it. If The write speed is fast for the first 1&amp;#x2F;3-1&amp;#x2F;4 of the drive, then it dips to abysmal speeds for the rest, you can be sure the drive is using the full drive caching mode. As I said, most of these low-end DRAMless Silicon Motion&amp;#x2F;Phison&amp;#x2F;Maxion controllers are, but of course the manufacturer might&amp;#x27;ve modified the firmware to use a smaller sized cache (like Crucial did for the test subject BX500).</text><parent_chain></parent_chain></comment><story><title>Transforming a QLC SSD into an SLC SSD</title><url>https://theoverclockingpage.com/2024/05/13/tutorial-transforming-a-qlc-ssd-into-an-slc-ssd-dramatically-increasing-the-drives-endurance/?lang=en</url></story>
<instructions>Your goal is to analyze the following comment and estimate how highly it will be upvoted by the Hacker News community.</instructions><comment><author>nickcw</author><text>This hack seems to take a 480GB SSD and transform it into a 120GB SSD&lt;p&gt;However the write endurance (the amount of data you can write to the SSD before expecting failures) increases from 120TB to 4000TB  which could be a very useful tradeoff, for example if you were using the disk to store logs.&lt;p&gt;I&amp;#x27;ve never seen this offered by the manufacturers though (maybe I haven&amp;#x27;t looked on the right place), I wonder why not?</text><parent_chain></parent_chain></comment><story><title>Transforming a QLC SSD into an SLC SSD</title><url>https://theoverclockingpage.com/2024/05/13/tutorial-transforming-a-qlc-ssd-into-an-slc-ssd-dramatically-increasing-the-drives-endurance/?lang=en</url></story>