Adding back a removed disk

I am using the FAS 3240, and have just got it setup and with 2 shelves connected to it.  I am testing out the command line commands  I was using the disk command, and used the disk remove command on one disk, just to test the command.  The disk is showing as now failed.   How can I now add this disk back, is there a command to undo the disk remove command as I want to add the disk back.

We are using ontap version 8.0.2 mode 7.

Re: Adding back a removed disk

priv set advanced

disk unfail

Re: Adding back a removed disk

use command   disk show -n    this show disk unassing, and used command      disk assign id_disk    this asing disk to filer ownership