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How Flash Cache firmware is updated

Firmware for Flash Cache devices is included with distribution files for Data ONTAP upgrades. If the running firmware is older than the firmware that is bundled with the Data ONTAP system files, it is updated automatically.

Firmware updates are not available for the original 16-GB PAM devices. Automatic updates occur only to Flash Cache devices, not PAM devices.

If you are upgrading Data ONTAP nondisruptively (NDU), Flash Cache firmware is updated nondisruptively. This is because the reboot required for Flash Cache firmware upgrades occurs before the final reboot of the cf giveback process. Consequently, if your system includes Flash Cache devices, you might see multiple reboots during a Data ONTAP NDU; this is expected behavior.

For information about what Flash Cache and PAM are and how they work, see the Data ONTAP 7-Mode System Administration Guide.