Delete obselete with redundancy

RMAN> delete obsolete
2> redundancy 2
3> device type disk;

released channel: ORA_DISK_1
released channel: ORA_DISK_2
released channel: ORA_DISK_3
released channel: ORA_DISK_4
released channel: ORA_DISK_5
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=20 device type=DISK
allocated channel: ORA_DISK_2
channel ORA_DISK_2: SID=24 device type=DISK
allocated channel: ORA_DISK_3
channel ORA_DISK_3: SID=25 device type=DISK
allocated channel: ORA_DISK_4
channel ORA_DISK_4: SID=58 device type=DISK
allocated channel: ORA_DISK_5
channel ORA_DISK_5: SID=60 device type=DISK
Deleting the following obsolete backups and copies:
Type                 Key    Completion Time    Filename/Handle
-------------------- ------ ------------------ --------------------
Control File Copy     59     17-MAY-14          /SHARED/backup1/controlfile.bkp
Control File Copy     60     17-MAY-14          /SHARED/backup1/%U
Backup Set           196    17-MAY-14
  Backup Piece       227    17-MAY-14          +DATA/cvrman/autobackup/2014_05_17/s_847802622.330.847802623

Do you really want to delete the above objects (enter YES or NO)?