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Even though modern file systems are usually tolerant w.r.t. power failures (*), in general, sudden power cuts should be avoided. The system should always be turned off cleanly. As this is not always possible, several techniques can be put in place to mitigate the effects of a power failure. For instance, see [[Carrier_board_design_guidelines_(SOM)#Sudden_power_off_management|this section of the carrier board design guidelines]].

* [http://www.linux-mtd.infradead.org/doc/ubifs.html#L_writebuffer UBIFS write-buffer].

Although implementing a mechanism for monitoring the health of flash memories is not required strictly speaking, it is recommended. Think about it as a sort of life insurance to cope with unpredictable events that might occur during the life of the product. As a result of a on-the-field software upgrade, for example, new features could be added leading to an increase of data rate written onto the flash memories. Consequently, the lifetime expectancy calculated when the product was designed is not valid anymore. In such a case, a properly designed monitoring system would alert the personnel devoted to the maintenance who could take measures before it is too late (see for instance the case of eMMC's used in [https://electrek.co/2020/11/09/tesla-emmc-failure-touchscreen-offers-extended-warranty/ Tesla cars]). The following section details an example of such a system.