Hi Finirel,
Yes you can replace the broken disk 0a.00.8. Easiest way to verify which spare disk that was used to replace the failed disk (0a.00.8) would be to review ASUP logs.
The command to check for a spare disk is the following:
storage aggregate show-spare-disks
Once you replace the disk you can make the drive a spare disk. You will just need to assign the disk to a specific node and then it should move to the spare disk pool.
Thanks
Team NetApp