HP XP7 for Compatible XRC User Guide (TK938-96001)
Table Of Contents
- XP7 for Compatible XRC User Guide
- Contents
- 1 Overview of Compatible XRC
- 2 Requirements and restrictions
- 3 Interoperability with other products and functions
- Volume sharing between Compatible XRC and other copy functions
- Using two Compatible XRC pairs together
- Using Compatible XRC with Continuous Access Synchronous Z
- Using Compatible XRC with Business Copy Z
- Using Compatible XRC with Compatible FlashCopy
- Using Compatible XRC with Hyper Parallel Access Volumes
- Configuration for the XRC Multiple Reader function
- Using Compatible XRC with other HP XP7 Storage software
- 4 Using Compatible XRC
- 5 Troubleshooting
- 6 Support and other resources
- A Controlling the amount of write data
- B Compatible XRC GUI reference
- Glossary
- Index
SDM; the default threshold is 0x500.When Level 1 Sleep is set to Disable, write I/Os to
volumes are not put in a wait status.
• Level 1: This level of control is performed when the sidefile capacity is equal to or larger than
the level-1 threshold, and is smaller than the level-2 threshold.
Write I/Os to volumes are put in a wait status by command retry when the sleep wait threshold
(that is, level-1 threshold) is exceeded.
• Level 2: 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 (that is, 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.
Sidefile puncture will occur.
The following figure shows levels of controlling write data when the Donot Block option is disabled.
30 Controlling the amount of write data