Adding new disks to Data Domain 2200

We are adding new disks to Data Domain 2200. After we added disks and then added the licenses.

We see all new disks as spare disks.

sysadmin@DD# disk show state

Enclosure   Disk

1  2  3  4  5  6  7  8  9  10 11 12

---------   ------------------------------------

1 .  .  .  s  .  .  .  s  s  s s  s

---------   ------------------------------------

Legend State          Count

------   ------------   -----

.        In Use Disks   6

s        Spare Disks    6

------   ------------   -----

Total 12 disks

How to make these spare to active??