Modifying logical subsystem timeout values

This section describes the list of logical subsystem (LSS) timeout values that you can modify.

The following lists contains the LSS timeout values that you can modify:

• Concurrent copy timeout
• Consistency group timeout
• Critical mode enable

• Modifying the Concurrent Copy timeout value
  Complete this task to modify a Concurrent Copy timeout value, which determines how long a volume in a concurrent copy session stays "long busy" (unavailable) before suspending the session.
• Modifying the consistency group timeout value
  Complete this task to modify the consistency group timeout value, which determines the amount of time that I/O is withheld from updating a source volume of a consistency group an error occurs.
• Modifying the critical mode setting
  Complete this task to enable the critical mode setting to prevent writes to source volumes if data cannot be copied to the target volume of the volume pair because of a permanent error.