Hitachi TrueCopy for z/OS (T1711-96009, June 2006)

216 TrueCopy for the XP1024/XP128/XP12000/XP10000
Figure 80 Combination 3: MODE 85,86 = OFF,ON – Threshold 1/2/3 = 50/60/70%
Figure 81 Combination 4: MODE 85,86 = ON,ON – Threshold 1/2/3 = 60/70/80%