If you try to shut down gracefully a storage server by pressing the power button on the front or going through ILOM, the storage server performs an ASM data redundancy check. If shutting down the storage server could lead to an ASM disk group force dismount due to reduced data redundancy, the shutdown is canceled and the LEDs blink as follows to alert the user that shutting down the storage server is not safe:

• On high capacity cells, all three LEDs on all hard drives blink for 10 seconds.

• On extreme flash cells, the blue OK-to-Remove LED blinks for 10 seconds, and the amber LED is lit.

You should not attempt a hard reset on the storage server.

If a storage server cannot be safely shut down due to reduced redundancy (the command "cellcli -e list griddisk attributes name, deactivationOutcome" will show all the offline and unhealthy disks), then you need to restore the data redundancy first. If there are other offline disks, you need to bring them back online and wait for resync to finish. If there is rebalance running to force drop failed disks or resilvering running to resilver data blocks after write back flash cache failure, you need to wait for the rebalance or resilvering to complete. Once data redundancy is restored, you may proceed to shut down the storage server again.