HP StorageWorks XP Remote Web Console Software - Manual (Page 83)

Continuous Access XP Journal user guide 83
NOTE: If an error occurs, the right-most column of the Preset list displays the error code. To view detailed
information about the error, right-click the error code, and select Error Detail. An error message appears
providing detailed information about the error.
Figure 40 DKC Option pane
The DKC Option pane displays the following:
• Minimum Paths: Specify the minimum number of paths required for each remote disk array connected
to the local disk array (default = 1).
An error occurs if you enter a larger number than the number of paths already set on the Add DKC
pane, or if the number of paths falls below this number (for example, due to path failures). When an
error occurs, the local disk array suspends all affected Continuous Access XP Journal (and Universal
Replicator for z/OS) pairs to prevent remote copy operations from adversely affecting performance due
to the inadequate number of paths.
If the local disk array contains Continuous Access XP Journal pairs that contain critical data for disaster
recovery, set the minimum number of paths to one, so Continuous Access XP Journal operations
continue even if there is only one path to a remote disk array.
If you need high performance at the local disk array, set the minimum number of paths to two or more,
depending on the number of pairs the local disk array manages.
• RIO MIH Time: Specify the RIO MIH timer value, which is the wait time until data transfer from the local
to remote disk array is complete. The RIO MIH time value must be from 10 to 100 seconds. The default
setting is 15 seconds.
NOTE: RIO MIH is an acronym for remote I/O missing interrupt handler.
Adding logical paths
Use the Add Path pane to add one or more logical paths between the local and remote disk arrays.
One primary disk array can be associated with up to 64 secondary disk arrays. Up to eight logical paths
can be configured between one primary disk array and one secondary disk array. When you add a
logical path, Continuous Access XP Journal automatically starts using the new logical path to perform
Continuous Access XP Journal copy activities.
The primary and secondary disk array administrators can perform the following procedure.
1. Ensure that the remote copy connections are properly configured.
2. Ensure that the Command View XP or XP Remote Web Console main pane is in Modify mode. For
more information, see the HP StorageWorks Command View XP User Guide for XP Disk Arrays or the
HP StorageWorks XP Remote Web Console User Guide for XP12000/XP10000.
3. Ensure that the DKC Operation pane is displayed (” Displaying the DKC Operation pane ” on page 75).
4. In the Switch Display box, select DKC.
5. Do one of the following:
• In the tree, select a remote disk array.