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CONTAP-277029: ONTAP preserves newer pre-staged system firmware during cluster image update

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Issue

  • During an ONTAP Automated Non-Disruptive Upgrade (ANDU) using the cluster image update command, if a newer version of BIOS or LOADER system firmware has been previously downloaded and staged on a node's boot media (via {}system node firmware download{}), the upgrade process now preserves that newer firmware instead of overwriting it with the older version bundled in the target ONTAP image.
  • Previously, cluster image update always installed the BIOS and LOADER firmware bundled in the ONTAP image, regardless of whether a newer version had already been staged on the boot media. This required customers to perform an additional takeover/giveback reboot cycle on each HA pair after the ONTAP upgrade to install the desired newer firmware – significantly extending maintenance windows for large environments.
  • With this improvement (available when running ONTAP 9.17.1 or later), the upgrade process automatically compares the firmware versions on the boot media with those bundled in the target ONTAP image. If the boot media version is higher, it is preserved. After the node reboots as part of the normal ANDU workflow, the newer BIOS and LOADER are activated – completing both the ONTAP upgrade and the firmware update in a single reboot.

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