You can hot-swap a faulty disk shelf module, removing the faulty module and replacing it without disrupting data availability.
About this task
When you hot-swap a disk shelf module, you must ensure that you never disable the only path to a disk, which results in a system outage.
Attention: If there is newer firmware in the /etc/shelf_fw directory than that on the replacement module, the system automatically runs a firmware update. This firmware update causes a service interruption on non-multipath HA AT‑FCX installations, multipath HA configurations running versions of Data ONTAP prior to 7.3.1, and systems with non-RoHS AT‑FCX modules.