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Device's built-in advanced functionalities
=== Device's built-in advanced functionalities ===
As explained in [[#Embedded Linux systems with eMMC or SD cards|this section]], e.MMC 's feature specific registers for monitoring the health of the device. Following is a dump of the standard registers of the target's e.MMC related to regarding the wear-out status of the device, namely <code>DEVICE_LIFE_TIME_EST_TYP_B</code>, <code>DEVICE_LIFE_TIME_EST_TYP_B</code>, and <code>PRE_EOL_INFO</code>:<pre class="board-terminal">
root@desk-mx8mp:~# mmc extcsd read /dev/mmcblk2 | grep LIFE
eMMC Life Time Estimation A [EXT_CSD_DEVICE_LIFE_TIME_EST_TYP_A]: 0x01
</pre>
It is worth remembering that some providers Some manufacturers use the additional proprietary registers to provide for providing information about the amount of data that have been actually written onto the device. If available, this number allows to calculate the WAF as the amount of data written by the applications of the test workload is known as well. Last but not least, it is worth remembering that advanced, proprietary tools may also be available for health monitoring. For instance, Western Digital provides such tools for its devices. For more information, please contact our Sales Department.
=Power failures=
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