HP StorageWorks P9000 User Manual page 58

9. In the Initial Copy list, select one of the following:
Entire Volume – to create the Continuous Access Synchronous Z pair relationship and
copy the data from main to remote volumes immediately. (Default)
None – to create the Continuous Access Synchronous Z pair relationship but copy no
data from main to remote volumes. You must ensure that data in the M-VOL and R-VOL
are identical when selecting None.
10. Copy Pace – enter the maximum number of tracks to be copied during the initial copy. Default
is 15.
Between 1-5 is slow, and is used to lessen impact to host I/O.
Between 5- 1 0 is a medium pace.
Between 1 1- 1 5 is a fast pace. Host I/O performance can be lowered.
1 1. From the Priority list, specify the scheduling order for the initial copy operation. The default
value is 32, and 1 to 256 can be specified.
For performing more initial copy operations than the setting value of the Maximum Initial Copy
Activities set on the System Option dialog box, the scheduling order (Priority) can be set for
the initial copy operations to be performed.
The Priority is determined within the range of the number of initial copy operations performed
at the same time. Therefore, until the first initial copy operations complying with the order of
the Priority are completed, the additionally specified initial copy operations are not started.
The CESTPAIR TSO command does not support the option for scheduling order for the initial
copy operation. When the Continuous Access Synchronous Z pair is created with CESTPAIR
command, initial copy operation is performed according to the order that the CESTPAIR
command is executed.
If a time-out error occurs during the Add Pair operation, the copy operation may not be
executed correctly in the order specified in the Priority field. A time-out error may be caused
by the CU configuration or a data path error. Review the error, Delete the pair with the error,
and then retry the Add Pair operation.
12. From the Difference Management list, select the method for managing differential data. With
Auto, either Cylinder or Track is used by the system, depending on the basic size of the logical
volume image (LVI). Default is Auto. For more information, see
(page 33).
This option cannot be changed after a pair is created.
13. From the CFW Data list, select whether the CFW data will be copied to the R-VOL.
14. From the DFW to R-VOL list, select whether the main system will suspend the pair if the remote
system cannot execute DFW (DASD fast write) to the R-VOL.
15. From the Time Stamp list, select whether or not the host I/O timestamp is transferred from M
VOL to R VOL.
16. Click Set.
17. You can review these settings in the Preview pane on the Pair Operation window.
To modify a setting, right-click the list item and select Modify from the menu.
To delete an item, right-click and click Delete.
18. When satisfied, click Apply.
If the operation does not start normally, an error code displays in the Error Code column in the
Preview list. To display an error message, select the LDEV, right-click, and select Error Detail.
58 Pair operations
"Managing differential data"