If your tape library or any other device is connected to NetApp’s filer SCSI adapter and you encounter problems with the device, try to re-enable adapters:
storage disable adapter 0e
storage enable adapter 0e
If filer says that adapter is busy and cannot be disabled, then force it:
storage disable -f adapter 0e
In case it’s a tape library, don’t forget to also re-enable SCSI adapters where tape drives are connected.