I realized after posting this that it is a repeat post, but those new to the Raspberry Pi might not have seen the original post, so here it is again:

SD cards are said to have a finite life. If you are planning on running a Raspberry Pi 24x7x365, there are some steps that you can take with GNU/Linux to extend the life of the card: here are some ideas.

Source: Raspberry Pi: Extending the life of the SD card | ZDNet