On Sun, Aug 30, 2020, 10:03 AM Jules Richardson via cctalk < cctalk@classiccmp.org> wrote:
> On 8/28/20 12:40 PM, Al Kossow via cctalk wrote: > > Also, I discovered recently that there is a maximum number of hours > > measured in years on SSDs and systems will start throwing SMART > > errors when that is exceeded. I have a few doing that now on systems > > with minimal writes but lots of hours. > > > > There are long discussions elsewhere of the dangers of using > non-industrial > > rated CFs and SDs in storage applications. > > I found it next to impossible to find information on what - if any - > technology a particular SSD uses to extend lifespan; while manufacturers > all compete on things like capacity and speed, very few of them seem > interested in telling us how long their product might last. > Most SATA and NVMe SSDs have a PBW or DWPD number that gives you an indication of how long it will last. These numbers are usually normalized to a JEDEC workload. From that you can often extrapolate to your workload if you know it well enough... It is one of the things I evaluate for Netflix's CDN.... SD and CF cards almost never do unless they claim industrial use. Ditto USB sticks, but with more industrial models available. Warner >
