On 06/01/2019 10:23, Markus Robert Kessler wrote:
[Snip Kingston cards fail after two weeks]

Are they genuine Kingston cards? There are so many fakes these days.

I personally only use Samsung and occasionally SanDisk flash products,
as they manufacture their own flash memory, rather than stick a badge on
whatever is cheapest this week.

If you are reading and writing 24/7, the most reliable storage medium is
a proper SSD via a USB to SATA cable. They designed for use as computer
hard disc (rather than offline file storage), have great random
read/write performance, and far greater endurance than anything else. It
will probably last as long as you are using the Pi.

The next best thing, especially if physical space is an issue, is a USB
pen drive. A full size one, not a low profile one as these get
tremendously hot. I recommend the Samsung USB 3.1 bar drives, as they
are small enough not to obscure other ports, and metal cased for heat
dissipation. They have tremendous performance on a USB 3 PC, but are
also far quicker than USB2 drives on the Pi. Importantly the 4K
read/write speeds are far greater than any SD card. You will get at
least 3 to 4 years of use out of them.

In last place is the SD card, where even the best Samsung class 4 or 6
cards barely acceptable random read/write performance, and many others
are truly abysmal drastically slowing down the Pi. I've only ever got a
year of intensive use out of them before they start failing.

Samsung have introduced an endurance range of SD cards, aimed at uses
like the Pi, but given they are about twice as expensive as normal
cards, and cost more than an equivalent sized USB 3.1 stick, I've not
tried them in any of my full size Pi's. I might consider one when I
refresh the cards in the Pi Zero's, as SD cards are the only real option
in them.

---druck

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