HP XP7 Continuous Access Synchronous for Mainframe Systems User Guide (TK911-96003)

Changing P-VOL Fence Level, CFW Data
You can change the P-VOL’s fence level, which specifies when to reject write operations to the
P-VOL under certain failure circumstances. You can also change whether CFW (DASD fast write)
data is copied to the S-VOL or not.
For more information on fence levels, see “Allowing I/O to the P-VOL after a split—Fence Level
options” (page 36).
Prerequisite information
• Pair status must be Pending or Duplex.
• The Edit Pair Options window is used for the following procedure. If you select multiple pairs,
the values do not display but are blank. When you change a value, the change applies to all
selected pairs
Procedure 19 To change the fence level and CFW data options
1. In the Storage Systems tree, click Replications > Remote Replications.
2. Click the Cnt Ac-S Pairs tab, then select the pair whose options are to be changed.
3. From the Actions menu, click Remote Replications > Edit Pair Options.
4. In the Edit Pair Options window, for Primary Volume Fence Level box, select the fence level
for the pairs.
- Never: The P-VOL can always be written to.
- Data: The P-VOL cannot be written to.
- Status: The P-VOL cannot be written to only if the primary system is not able to change S-VOL
status to Suspended.
5. For CFW Data, select whether CFW data is copied to the S-VOL.
• - Primary Volume Only: CFW data is not copied to the S-VOL.
• - Secondary Volume Copy: CFW data is copied to the S-VOL.
82 Monitoring and maintaining the Cnt Ac-S Z system