<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">A Class 10 SD card doesn’t fail in 6-9 months, but it will fail. You have two USB 3 ports on the Pi 4. The best and easiest way I know it to acquire an inexpensive USB SSD drive. Attach it and clone the SD to the SSD but with different partition IDs. Edit /boot/boot.txt and replace the partition ID of rootfs with the rootfs partition of the SSD. You will boot from the SD, but after boot everything is on the SSD.<div class=""><br class=""></div><div class="">And you do not want to turn off swap!</div><div class=""><br class=""></div><div class="">Joe N9JR</div><div class=""><br class=""></div><div class=""><br class=""><div><br class=""><blockquote type="cite" class=""><div class="">On Mar 30, 2020, at 7:36 AM, Michael Walker via Dxspider-support <<a href="mailto:dxspider-support@tobit.co.uk" class="">dxspider-support@tobit.co.uk</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div dir="ltr" class=""><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">Hi All<br class=""></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif"><br class=""></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">A few weeks ago I moved my Cluster over to a RPI4 where it hums along nicely. </div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif"><br class=""></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">I know from many weather stations that the SD card will go into a read only state in about 6-9 months as writes start to fail. Running IOTOP tells me what we do significant writes to the card.</div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif"><br class=""></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">Does anyone have a list of things they do to minimize the writes? </div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif"><br class=""></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">On my list I have:</div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif"><br class=""></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif"><ol class=""><li class="">Turn off the swap space</li><li class="">Move /spider/data to a RAM disk</li></ol><div class="">Anything else?</div></div></div></div></blockquote></div><br class=""></div></body></html>