Disk firmware is bundled with the Data ONTAP system files and updated automatically during Data ONTAP upgrades. You can also obtain disk firmware from the NetApp Support Site and update it manually.
How disk firmware is updated
When you upgrade Data ONTAP, disk firmware is updated automatically if the firmware on the disks is older than the firmware that is bundled with the Data ONTAP system files. You can also update disk firmware by downloading the most recent firmware package from the NetApp Support Site and installing the files.
Service availability during disk firmware updates
By default, disk firmware updates take place automatically in the background, thus ensuring the continuity of storage system services. Nonetheless, you must download and install the latest disk firmware before performing an NDU.