what does IT mean in the "symdev list"out put

E:\Program Files\EMC\SYMCLI\bin>symdev list -noport |more

Symmetrix ID:

        Device Name           Directors                  Device
--------------------------- ------------- -------------------------------------
                                                                           Cap
Sym  Physical               SA    DA :IT  Config        Attribute    Sts   (MB)
--------------------------- ------------- -------------------------------------

0053 Not Visible            ???:? 01A:D19 2-Way Mir     N/Grp'd      RW       3
0054 Not Visible            ???:? 16B:C18 2-Way Mir     N/Grp'd      RW       3
0055 Not Visible            ???:? 16A:D18 2-Way Mir     N/Grp'd      RW       3
0056 Not Visible            ???:? 01B:C15 2-Way Mir     N/Grp'd      RW       3
0073 Not Visible            ???:? 01A:D9  2-Way Mir     N/Grp'd      RW       3
0074 Not Visible            ???:? 16B:CC  2-Way Mir     N/Grp'd      RW       3
0075 Not Visible            ???:? 16A:DC  2-Way Mir     N/Grp'd      RW       3
0076 Not Visible            ???:? 01B:CD  2-Way Mir     N/Grp'd      RW       3
009B Not Visible            ???:? 16C:C1  2-Way Mir     N/Grp'd      RW       3

What does DA:IT mean in this ouput.I could figure that DA is disk director,what is IT?

Message was edited by: SymmetrixForumsModerator Removed Symmetrix ID.