Controlling the amount of write data (2) – HP XP for Compatible Extended Remote Copy Software Licenses User Manual

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This level of control is performed when the sidefile capacity is equal to or larger than the level-2
threshold, and is smaller than the level-3 threshold.
Write I/Os to volumes are put in a wait status by SCP-SCI reporting when the SCP-SCI reporting
threshold (for example, level-2 threshold) is exceeded.

• Level 3

This level of control is performed when the sidefile capacity is equal to or larger than the level-3
threshold.
Note: Sidefile puncture will occur. (The puncture threshold is the sidefile threshold plus 10%.)

Figure 15 Controlling the Amount of Write Data (2)

Level 1 Sleep
Use to specify whether the storage system should perform Sleep - Wait command retry when the
sidefile threshold exceeds the sleep wait threshold (for example, the level-1 threshold).
Enable radial button

The storage system performs a Sleep - Wait command retry.

Disable radial button

The storage system will not perform the Sleep - Wait command retry.
Note : Level 1 Sleep is always set to Disable when Block Option is set to Volume Level.

Sleep Time
Use to specify the sleep wait time for Sleep - Wait command retry.
10ms

The storage system waits 10 milliseconds.

100ms

The storage system waits 100 milliseconds.

Level 1 SIM
Use to specify whether the storage system should report a SIM (service information message) to
the host when the sidefile threshold exceeds the sleep wait threshold (for example, the level-1
threshold).

Performing Compatible XRC Operations

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