All of the following are data optimization (space efficiency) technologies from IBM EXCEPT（）.

A.Giant Magneto Resistive heads 
B.speed matching 
C.flat lap head design 
D.grooved roller bearings 

A.eliminates dependence of middleware layer 
B.provides the ability to partition the library 
C.makes tape look and work like any removable media 
D.provides up to 48% lower power consumption in idle mode

A.TS3500 with a dual gripper 
B.TS3500 with the High Availability option 
C.TS3500 with Advanced Library Management System 
D.TS3500 with both LTO generation 4 Ultrium drives and 3592 high performance drivesintermixed