Sorry, I'm fairly new to administering Netapp and am not quite sure what's happening with a disk in our FAS2040 controlled array.
Basically disk 4 in our first aggregate has "disappeared" from the list of disks. If I do a disk_status with ONTAP command line it does not appear either. On the filer itself, the disk light is solid green, where as all other disks are flashing with green activity light.
Is the disk faulty? Any help would be greatly appreciated.
I know this is a very old post but am having the same issue with NetApp FAS2520 - Cannot see Disk in Bay 0 from ONTAP. We can only view disks in Bay 1 through to 11. It is a Dual Controller. I also have both the Activity and Attention LED's off on the disk.
Buying a new disk replacement didn't resolve the issue.
Did the Disk Qualification Package Upgrade as suggested by Naveenpusuluru resolve the issue.
Then you might have an issue with the connector of the disk to the back-plane in the shelf. Try to remove it, wait 20 seconds and then re-insert it. If the disk still does not show up in any of the lists, call NetApp Support to get further troubleshooting or the disk replaced.