Change Continuous Access Journal options used by mirrors
Most Continuous Access Journal pair operations are performed on multiple pairs. This is done
using a journal or mirrors. You can change the following options that affect the pairs in a mirror:
• Unit of Path Watch Time—establishes the unit of path watch time.
• Path Watch Time—establishes the amount of time before a blocked path results in the mirror
being split.
• Forward Path Watch Time—establishes whether to forward the Path Watch Time value of the
master journal to the restore journal.
• Copy Pace—establishes the pace at which data is copied.
• Transfer Speed—which specifies the speed for data transfer.
• Delta Resync Failure—which specifies the processing that takes place in the event of a failure.
Prerequisite information
Please be aware of the following when changing mirror options:
• mirror options can be changed on the primary storage system and secondary storage system.
• To change mirror options, the status of the mirror is one of the following:
Initialâ—¦
â—¦ Active
â—¦ Stopped
â—¦ Hold
â—¦ Holding
â—¦ Hold(Failure)
• The Transfer Speed option can be changed if the mirror’s status is Active, Hold, or Holding.
• When changing options for multiple mirrors, you can leave some options unchanged by
entering or selecting no value. If you specify a value, it is applied to the selected mirrors.
To change options for a mirror
1. In Remote Web Console, select Actions > Remote Copy > Continuous Access Journal > Journal
Operation. The Journal Operation window displays.
2. Click to change the mode from View to Modify.
3. Operate either of the following:
In the upper right list, right click the desired journal and then select Mirror > Change Mirror
Option.
Journal and mirror maintenance 85
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