SD or CF card lifetime

[admin]

All LMs are shipped with industrial-grade cards. The expected lifetime is many years.
If LM only had an on-board flash then it would not be possible to repair the device if storage failed.

[sx3]

I have a Schneider HomeLynk, V3.1.
I haven't opened it, but I assume in have onboard flash and no card?

[admin]

All devices have a micro SD card. Some have an additional on-board flash for database/trends. The OS is stored on the micro SD.

[johan]

My SD card failed after 8years of continous operation.

The card was not completely broken so I could recover the database. 

I have a number of units in operation with similar age, probably a good idea to do some service and change the cards on all units 5+y old? Or was this a one-time fluke? 
It had a blue samsung 8GB card installed.

[Daniel]

It is good idea to replace them, new cards are much better but the one like yours will fail most likely at some point.