On 11/05/2018 21:17, Andrew Gabriel wrote:
> I have several original Pi 1's which have been running 24/7 for almost
> 5 years. I've never had a card fail in them. The application logs quite
> frequently to disk and the writes are flushed. I did change the cards
> after around 3 years, just to be safe, and because you can't read how
> worn they are.
>
> The main killer for SD cards is losing power during or shortly after
> writes.

Completely opposite to my experience. I haven't seen any power failures
corrupt SD cards since the early firmware versions when the Pi first
came out.

On the other hand we had several dozens of Pi1B's controlling smartcard
MUXs. These just sit there running a very simple python server, and do
no writes to the card, except for the normal Raspbian system logging
(they are also powered from the host machine, and don't get shutdown
gracefully when it reboots).

All these performed perfectly for 2 to 2.5 years, then one by one the SD
cards failed, and had to be replaced. I took the opportunity to make up
a new Raspbian Jessie lite image, with minimal logging, which should
make them last a bit longer.

---druck

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