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36 Chapter 3
Functional and Operational Characteristics
Table 3.7 System Option Modes for HXRC
Mode Level Description and Usage
45 Optional Sleep Wait suppressing option (see modes 61, 85, 86, 97). When Mode 45 is ON and Mode 61 is ON,
WRITE I/Os for LDEVs are blocked by the threshold specified by SDM.
ON: Sidefile threshold does not activate Sleep Wait timer at the sleep wait threshold.
OFF: Sidefile threshold activates Sleep Wait timer at the sleep wait threshold.
Microcode level: -10-00-00/10 and higher.
61 Optional Enables the DONOTBLOCK option of the XADDPAIR command. Must be OFF if the operating system
does not support the DONOTBLOCK option.
ON: DONOTBLOCK option activated.
OFF: DONOTBLOCK option ignored.
Microcode level: 01-12-18-00/00 and higher.
85,86 Optional Variable sidefile threshold.
Mode 85 ON and mode 86 OFF: Thresholds for Sleep wait/SCP/Puncture = 30/40/50%
Mode 85 OFF and mode 86 OFF: Thresholds for Sleep wait/SCP/Puncture = 40/50/60%
Mode 85 OFF and mode 86 ON: Thresholds for Sleep wait/SCP/Puncture = 50/60/70%
Mode 85 ON and mode 86 ON: Thresholds for Sleep wait/SCP/Puncture = 60/70/80%
Microcode level: 01-12-18-00/00 and higher.
97 Optional Variable Sleep Wait timer duration (see modes 45, 85, 86).
ON: Sleep Wait timer duration = 10 ms.
OFF: Sleep Wait timer duration = 100 ms.
Microcode level: 01-10-00-00/10 and higher.
98 Optional Selects SCP or session cancel (see modes 45, 85, 86).
ON: Forced session cancel.
OFF: SCP.
Microcode level: 01-10-00-00/10 and higher.
118 Optional HXRC, CC, TC390A – SIM notification when:
HXRC+CC sidefile reaches sleep wait threshold (see modes 45, 85, 86, 97).
TC390A sidefile reaches high-water mark (HWM = sidefile threshold - 20%) (see mode 93).
ON: Generate SIM.
OFF: No SIM generated.
Microcode level: 01-10-00-00/10 and higher.
Table 3.8 System Option Modes for Concurrent Copy (CC)
Mode Level Description and Usage
118 Optional HXRC, CC, TC390A – SIM notification when:
HXRC+CC sidefile reaches sleep wait threshold (see modes 45, 85, 86, 97).
TC390A sidefile reaches high-water mark (HWM = sidefile threshold - 20%) (see mode 93).
ON: Generate SIM.
OFF: No SIM generated.
Microcode level: 01-10-00-00/10 and higher.