Hitachi TrueCopy for z/OS user guide (December 2005)

204 TrueCopy for the XP128/XP1024/XP10000/XP12000
Figure 78 Combination 3: MODE 85,86 = OFF,ON – Threshold 1/2/3 = 50/60/70%
Figure 79 Combination 4: MODE 85,86 = ON,ON – Threshold 1/2/3 = 60/70/80%