1. When a drive is faulted and ready for replacement, OneFS will illuminate the Front Panel Fault LED associated with that node, the Drive Sled Fault LED, and the Fault LED associated with that drive.
2. Identify the front panel display with the Fault LED on, remove its bezel and then locate the drive sled with the fault LED illuminated.
3. Push the ‘request for service’ button on the sled display panel to notify OneFS that the sled is about to be removed.
4. The white hand ‘not safe to remove’ LED will immediately blink to acknowledge the button press.
5. OneFS then prepares itself for losing up to 6 working drives (on 2.5” sled) and, when ready, the white hand LED is switched off.
6. When the white hand LED has turned off, it is now safe to pull the sled.
7. Insert the new drive into the empty slot in the sled.

参考资料

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https://community.emc.com/community/products/isilon/blog/2017/06/27/gen-6-data-drive-location-identification-and-replacement