HP XP Continuous Access Software - Manual (Page 97)

10. Click Apply to apply the settings.
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 44 DKC Option pane
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Minimum Paths: Minimum number of paths required for each remote array connected to the
local array (default is 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 array suspends all affected XP Continuous Access Journal
(and Hitachi Universal Replicator for z/OS) pairs to prevent remote copy operations from
adversely affecting performance due to an inadequate number of paths.
If the local array contains XP Continuous Access Journal pairs that contain critical data for
disaster recovery, set the minimum number of paths to one, so XP Continuous Access Journal
operations continue even if there is only one path to a remote array.
If you need high performance at the local array, set the minimum number of paths to two or
more, depending on the number of pairs the local array manages.
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RIO MIH Time: RIO MIH timer value, which is the wait time until the data transfer from the
local array to the remote 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 arrays.
One primary array can be associated with up to 64 secondary arrays. Up to eight logical paths
can be configured between one primary array and one secondary array. When you add a logical
path, XP Continuous Access Journal automatically starts using the new logical path to perform XP
Continuous Access Journal copy activities.
To add one or more logical paths between the local and remote arrays, the primary and secondary
array administrators can perform the following procedure:
1. Ensure that the remote copy connections are properly configured.
2. Ensure that XP Command View Advanced Edition Software or XP Remote Web Console is in
Modify mode. For more information, see the HP StorageWorks XP Command View user guide
for XP Disk Arrays or the HP StorageWorks XP Remote Web Console user guide for
XP12000/XP10000/SVS200.
3. Display the DKC Operation pane (see Displaying the DKC Operation pane ).
Adding logical paths 97