Web lists-archives.com

Re: Measuring (or calculating) how many bytes are actually written to disk when I repeatedly save a file




On 12.04.2019 23:47, Michael Stone wrote:
On Fri, Apr 12, 2019 at 01:13:49PM -0400, rhkramer@xxxxxxxxx wrote:
It looks like I am writing something like 20 GB per day

That's basically nothing for a reasonably sized modern SSD.

Still the SSD market is having a steady decline in terms of quality\longevity of NAND based devices.
SSD manufacturers quickly discovered that drives they sell are too good and last too long.
So now we have TLC-based and QLC-based drives for almost all market segments, which sold for almost the same price as MLC-based drives were sold in the past.
Ex. Kingston HyperX FURY [SHFS37A/120G] was produced in 2014 and was MLC(2bit)-based. It had 3 year warranty and was rated for 354 TBW or 2,69 DWPD.
HyperX Fury RGB [SHFR200/240G] (2019) is now 3D TLC(3bit)-based. It has same 3 year limited warranty and advertised as 120 TBW or 0,46 DWPD.

Worst offender of this "modern SSD fraud" is Samsung, because he still says 3D-NAND-V-whatever MLC in advertisements when in fact those drives are TLC, because TLC NAND is 3bit per cell.
Only recently, Samsung began to add (3bit) to that "3D V-NAND MLC" phrasing in specifications.
Other manufacturers parroting the same marketing trick and getting away with it.
And as a result, MLC-based drives almost vanished from consumer\enthusiast markets because people are happy with TLC and know no better.


-- 
With kindest regards, Alexander.

⢀⣴⠾⠻⢶⣦⠀ 
⣾⠁⢠⠒⠀⣿⡁ Debian - The universal operating system
⢿⡄⠘⠷⠚⠋⠀ https://www.debian.org
⠈⠳⣄⠀⠀⠀⠀